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Tuesday, August 23, 2022

History of animal testing

From Wikipedia, the free encyclopedia
 
One of Pavlov’s dogs with a saliva-catch container and tube surgically implanted in its muzzle, Pavlov Museum, 2005

The history of animal testing goes back to the writings of the Ancient Greeks in the 4th and 3rd centuries BCE, with Aristotle (384–322 BCE) and Erasistratus (304–258 BCE) one of the first documented to perform experiments on nonhuman animals. Galen, a physician in 2nd-century Rome, dissected pigs and goats, and is known as the "Father of Vivisection." Avenzoar, an Arabic physician in 12th-century Moorish Spain who also practiced dissection, introduced animal testing as an experimental method of testing surgical procedures before applying them to human patients. Although the exact purpose of the procedure was unclear, a Neolithic surgeon performed trepanation on a cow in 3400-3000 BCE. This is the earliest known surgery to have been performed on an animal, and it is possible that the procedure was done on a dead cow in order for the surgeon to practice their skills.

History of animal testing

The mouse is a typical testing species.

In 1242, Ibn al-Nafis provided accurate descriptions of the circulation of blood in mammals. A complete description of this circulation was later provided in the 17th century by William Harvey.

In his unfinished 1627 utopian novel, New Atlantis, scientist and philosopher Francis Bacon proposed a research center containing "parks and enclosures of all sorts of beasts and birds which we use ... for dissections and trials; that thereby we may take light what may be wrought upon the body of man."

In the 1660s, the physicist Robert Boyle conducted many experiments with a pump to investigate the effects of rarefied air. He listed two experiments on living nonhuman animals: "Experiment 40", which tested the ability of insects to fly under reduced air pressure, and the dramatic "Experiment 41," which demonstrated the reliance of living creatures on the air for their survival. Boyle conducted numerous trials during which he placed a large variety of different nonhuman animals, including birds, mice, eels, snails and flies, in the vessel of the pump and studied their reactions as the air was removed. Here, he describes an injured lark:

…the Bird for a while appear'd lively enough; but upon a greater Exsuction of the Air, she began manifestly to droop and appear sick, and very soon after was taken with as violent and irregular Convulsions, as are wont to be observ'd in Poultry, when their heads are wrung off: For the Bird threw her self over and over two or three times, and dyed with her Breast upward, her Head downwards, and her Neck awry.

In the 18th century, Antoine Lavoisier decided to use a guinea pig in a calorimeter because he wanted to prove that respiration was a form of combustion. He had an impression that combustion and respiration are chemically identical. Lavoisier demonstrated this with the help of Pierre-Simon Laplace. They both carefully measured the amount of "carbon dioxide and heat given off by a guinea pig as (they) breathed". Then they contrasted this to "the amount of heat produced when they burned carbon to produce the same amount of carbon dioxide as had been exhaled by the guinea pig". Their conclusion made Lavoisier confident "that respiration is a form of combustion". Also, the result showed that the heat mammals produce through respiration allowed their bodies to be above room temperature.

Stephen Hales measured blood pressure in the horse. In the 1780s, Luigi Galvani demonstrated that electricity applied to a dead, dissected, frog's leg muscle caused it to twitch, which led to an appreciation for the relationship between electricity and animation. In the 1880s, Louis Pasteur convincingly demonstrated the germ theory of medicine by giving anthrax to sheep. In the 1890s, Ivan Pavlov famously used dogs to describe classical conditioning.

In 1921 Otto Loewi provided the first substantial evidence that neuronal communication with target cells occurred via chemical synapses. He extracted two hearts from frogs and left them beating in an ionic bath. He stimulated the attached Vagus nerve of the first heart and observed its beating slowed. When the second heart was placed in the ionic bath of the first, it also slowed.

In the 1920s, Edgar Adrian formulated the theory of neural communication that the frequency of action potentials, and not the size of the action potentials, was the basis for communicating the magnitude of the signal. His work was performed in an isolated frog nerve-muscle preparation. Adrian was awarded a Nobel Prize for his work.

In the 1960s David Hubel and Torsten Wiesel demonstrated the macro columnar organization of visual areas in cats and monkeys, and provided physiological evidence for the critical period for the development of disparity sensitivity in vision (i.e.: the main cue for depth perception), and were awarded a Nobel Prize for their work.

In 1996 Dolly the sheep was born, the first mammal to be cloned from an adult cell. The process by which Dolly the sheep was cloned utilized a process known as nuclear transfer applied by lead scientist Ian Wilmut. Although other scientists were not immediately able to replicate the experiment, Wilmut argued that the experiment was indeed repeatable, given a timeframe of over a year.

In 1997, innovations in frogs, Xenopus laevis, by developmental biologist Jonathan Slack of the University of Bath, created headless tadpoles, which could allow future applications in donor organ transplantation.

There has been growing concern about both the methodology and the care of animals in laboratories who are used in testing. There is increasing emphasis on more humane and compassionate treatment of other animals. Methodological concerns include factors that make animal study results less reproducible than intended. For example, a 2014 study from McGill University in Montreal, Canada suggests that mice handled by men rather than women showed higher stress levels.

In medicine

Early depictions of vivisection using pigs

In the 1880s and 1890s, Emil von Behring isolated the diphtheria toxin and demonstrated its effects in guinea pigs. He went on to demonstrate immunity against diphtheria in other animals in 1898 by injecting a mix of toxin and antitoxin. This work constituted in part the rationale for awarding von Behring the 1901 Nobel Prize in Physiology or Medicine. Roughly 15 years later, Behring announced such a mix suitable for human immunity which largely banished diphtheria from the scourges of humankind. The antitoxin is famously commemorated each year in the Iditarod race, which is modeled after the Nome in the 1925 serum run to Nome. The success of the animal studies in producing the diphtheria antitoxin are attributed by some as a cause of the decline of the early 20th century antivivisectionist movement in the USA.

In 1921, Frederick Banting tied up the pancreatic ducts of dogs and discovered that the isolates of pancreatic secretion could be used to keep dogs with diabetes alive. He followed up these experiments with the chemical isolation of insulin in 1922 with John Macleod. These experiments used bovine sources instead of dogs to improve the supply. The first person treated was Leonard Thompson, a 14-year-old diabetic who only weighed 65 pounds and was about to slip into a coma and die. After the first dose, the formulation had to be re-worked, a process that took 12 days. The second dose was effective. These two won the Nobel Prize in Physiology or Medicine in 1923 for their discovery of insulin and its treatment of diabetes mellitus. Thompson lived 13 more years taking insulin. Before insulin's clinical use, a diagnosis of diabetes mellitus meant death; Thompson had been diagnosed in 1919.

In 1943, Selman Waksman's laboratory discovered streptomycin using a series of screens to find antibacterial substances from the soil. Waksman coined the term antibiotic with regards to these substances. Waksman would win the Nobel Prize in Physiology or Medicine in 1952 for his discoveries in antibiotics. Corwin Hinshaw and William Feldman took the streptomycin samples and cured tuberculosis in four guinea pigs with it. Hinshaw followed these studies with human trials that provided a dramatic advance in the ability to stop and reverse the progression of tuberculosis. Mortality from tuberculosis in the UK has diminished from the early 20th century due to better hygiene and improved living standards, but from the moment antibiotics were introduced, the fall became steep so that by the 1980s mortality in developed countries was effectively zero.

In the 1940s, Jonas Salk used rhesus monkey cross-contamination studies to isolate the three forms of the polio virus that affected hundreds of thousands yearly. Salk's team created a vaccine against the strains of polio in cell cultures of rhesus monkey kidney cells. The vaccine was made publicly available in 1955 and reduced the incidence of polio 15-fold in the USA over the following five years. Albert Sabin made a superior "live" vaccine by passing the polio virus through animal hosts, including monkeys. The vaccine was produced for mass consumption in 1963 and is still in use today. It had virtually eradicated polio in the US by 1965. It has been estimated that 100,000 rhesus monkeys were killed in the course of developing the polio vaccines, and 65 doses of vaccine were produced from each monkey. Writing in the Winston-Salem Journal in 1992, Sabin said, "Without the use of nonhuman animals and human (animals), it would have been impossible to acquire the important knowledge needed to prevent much suffering and premature death not only among humans but (other) animals as well."

Also in the 1940s, John Cade tested lithium salts in guinea pigs in a search for pharmaceuticals with anticonvulsant properties. The nonhuman animals seemed calmer in their mood. He then tested lithium on himself, before using it to treat recurrent mania. The introduction of lithium revolutionized the treatment of manic-depressives by the 1970s. Prior to Cade's animal testing, manic-depressives were treated with a lobotomy or electro-convulsive therapy.

In the 1950s the first safer, volatile anaesthetic halothane was developed through studies on rodents, rabbits, dogs, cats and monkeys. This paved the way for a whole new generation of modern general anaesthetics – also developed by animal studies – without which modern, complex surgical operations would be virtually impossible.

In 1960, Albert Starr pioneered heart valve replacement surgery in humans after a series of surgical advances in dogs. He received the Lasker Medical Award in 2007 for his efforts, along with Alain Carpentier. In 1968 Carpentier made heart valve replacements from the heart valves of pigs, which are pre-treated with glutaraldehyd to blunt immune response. Over 300,000 people receive heart valve replacements derived from Starr and Carpentier's designs annually. Carpentier said of Starr's initial advances "Before his prosthetic, patients with valvular disease would die."

In the 1970s, leprosy multi-drug antibiotic treatments were refined using leprosy bacteria grown in armadillos and were then tested in human clinical trials. Today, the nine-banded armadillo is still used to culture the bacteria that causes leprosy, for studies of the proteomics and genomics (the genome was completed in 1998) of the bacteria, for improving therapy and developing vaccines. Leprosy is still prevalent in Brazil, Madagascar, Mozambique, Tanzania, India, and Nepal, with over 400,000 cases at the beginning of 2004. The bacteria has not yet been cultured in vitro with success necessary to develop drug treatments or vaccines, and mice and armadillos have been the sources of the bacteria for research.

The non-human primate models of AIDS, using HIV-2, SHIV, and SIV in macaques, have been used as a complement to ongoing research efforts against the virus. The drug tenofovir has had its efficacy and toxicology evaluated in macaques and found long-term/high-dose treatments had adverse effects not found using short-term/high-dose treatment followed by long-term/low-dose treatment. This finding in macaques was translated into human dosing regimens. Prophylactic treatment with anti-virals has been evaluated in macaques because an introduction of the virus can only be controlled in an animal model. The finding that prophylaxis can be effective at blocking infection has altered the treatment for occupational exposures, such as needle exposures. Such exposures are now followed rapidly with anti-HIV drugs, and this practice has resulted in measurable transient virus infection similar to the NHP model. Similarly, the mother-to-fetus transmission, and its fetal prophylaxis with antivirals such as tenofovir and AZT, has been evaluated in controlled testing in macaques not possible in humans, and this knowledge has guided antiviral treatment in pregnant mothers with HIV. "The comparison and correlation of results obtained in monkey and human studies are leading to a growing validation and recognition of the relevance of the animal model. Although each animal model has its limitations, carefully designed drug studies in nonhuman primates can continue to advance our scientific knowledge and guide future clinical trials."

Throughout the 20th century, research that used live nonhuman animals has led to many other medical advances and treatments for human diseases, such as: organ transplant techniques and anti-transplant rejection medications, the heart-lung machine, antibiotics like penicillin, and whooping cough vaccine.

Presently, animal experimentation continues to be used in research that aims to solve medical problems including Alzheimer's disease, multiple sclerosis, spinal cord injury, and many more conditions in which there is no useful in vitro model system available.

Veterinary advances

A veterinary surgeon at work with a cat

Animal testing for veterinary studies accounts for around five percent of research using other animals. Treatments to each of the following animal diseases have been derived from animal studies: rabies, anthrax, glanders, Feline immunodeficiency virus (FIV), tuberculosis, Texas cattle fever, Classical swine fever (hog cholera), Heartworm and other parasitic infections.

Testing other animals for rabies do require the animal to be dead, and it takes two hours to conduct the test.

Basic and applied research in veterinary medicine continues in varied topics, such as searching for improved treatments and vaccines for feline leukemia virus and improving veterinary oncology.

Early debate

The ethical implications of using animals for testing has been a heated debate in regards to the humane treatment that is used.
 

In 1655, physiologist Edmund O'Meara was recorded as saying that "the miserable torture of vivisection places the body in an unnatural state." O'Meara thus expressed one of the chief scientific objections to vivisection: that the pain that the individual endured would interfere with the accuracy of the results.

In 1822, the first animal protection law was enacted in the British parliament, followed by the Cruelty to Animals Act (1876), the first law specifically aimed at regulating animal testing. The legislation was promoted by Charles Darwin, who wrote to Ray Lankester in March 1871:

You ask about my opinion on vivisection. I quite agree that it is justifiable for real investigations on physiology; but not for mere damnable and detestable curiosity. It is a subject which makes me sick with horror, so I will not say another word about it, else I shall not sleep to-night."

Opposition to the use of nonhuman animals in medical research arose in the United States during the 1860s, when Henry Bergh founded the American Society for the Prevention of Cruelty to Animals (ASPCA), with America's first specifically anti-vivisection organization being the American AntiVivisection Society (AAVS), founded in 1883.

In the UK, an article in the Medical Times and Gazette on April 28, 1877, indicates that anti-vivisectionist campaigners, mainly clergymen, had prepared a number of posters entitled, "This is vivisection," "This is a living dog," and "This is a living rabbit," depicting nonhuman animals in a poses that they said copied the work of Elias von Cyon in St. Petersburg, though the article says the images differ from the originals. It states that no more than 10 or a dozen men were actively involved in animal testing on living nonhuman animals in the UK at that time.

Antivivisectionists of the era believed the spread of mercy was the great cause of civilization, and vivisection was cruel. However, in the U.S., the antivivisectionists' efforts were defeated in every legislature because of the widespread support of an informed public for the careful and judicious use of other animals. The early antivivisectionist movement in the U.S. dwindled greatly in the 1920s. Overall, this movement had no US legislative success. The passing of the Laboratory Animal Welfare Act, in 1999 was more focused on protecting the welfare of other animals who are used in all fields, including research, food production, consumer product development, etc.

On the other side of the debate, those in favor of nonhuman-animal testing held that experiments on other animals were necessary to advance medical and biological knowledge and to ensure the safety of products intended for human and animal use. In 1831, the founders of the Dublin Zoo—the fourth oldest zoo in Europe, after Vienna, Paris, and London—were members of the medical profession, interested in studying the individuals both while they were alive and when they were dead. Claude Bernard, known as the "prince of vivisectors" and the father of physiology—whose wife, Marie Françoise Martin, founded the first anti-vivisection society in France in 1883—famously wrote in 1865 that "the science of life is a superb and dazzlingly lighted hall which may be reached only by passing through a long and ghastly kitchen." Arguing that "experiments on (nonhuman) animals...are entirely conclusive for the toxicology and hygiene of man...the effects of these substances are the same on man as on (other) animals, save for differences in degree," Bernard established animal experimentation as part of the standard scientific method. In 1896, the physiologist and physician Dr. Walter B. Cannon said "The antivivisectionists are the second of the two types Theodore Roosevelt described when he said, 'Common sense without conscience may lead to crime, but conscience without common sense may lead to folly, which is the handmaiden of crime.'" These divisions between pro- and anti- animal testing groups first came to public attention during the brown dog affair in the early 20th century, when hundreds of medical students clashed with anti-vivisectionists and police over a memorial to a vivisected dog.

Variable renewable energy

From Wikipedia, the free encyclopedia
 
The 150 MW Andasol solar power station is a commercial parabolic trough solar thermal power plant, in Spain. The Andasol plant uses tanks of molten salt to store solar energy so that it can continue generating electricity even after sunset.
 
Grids with high penetration of renewable energy sources generally need more flexible generation rather than baseload generation

Variable renewable energy (VRE) or intermittent renewable energy sources (IRES) are renewable energy sources that are not dispatchable due to their fluctuating nature, such as wind power and solar power, as opposed to controllable renewable energy sources, such as dammed hydroelectricity or biomass, or relatively constant sources, such as geothermal power.

The use of small amounts of intermittent power has little effect on grid operations. Using larger amounts of intermittent power may require upgrades or even a redesign of the grid infrastructure. Options to absorb large shares of variable energy into the grid include using storage, improved interconnection between different variable sources to smooth out supply, using dispatchable energy sources such as hydroelectricity and having overcapacity, so that sufficient energy is produced even when weather is less favourable. More connections between the energy sector and the building, transport and industrial sectors may also help.

Background and terminology

The penetration of intermittent renewables in most power grids is low: global electricity generation in 2021 was 7% wind and 4% solar. However, in 2021 Denmark, Luxembourg and Uruguay generated over 40% of their electricity from wind and solar. Characteristics of variable renewables include their unpredictability, variability, their low running costs and the fact they are constrained to a certain location. These provide a challenge to grid operators, who must make sure supply and demand are matched. Solutions include energy storage, demand response, availability of overcapacity and sector coupling. Smaller isolated grids may be less tolerant to high levels of penetration.

Matching power demand to supply is not a problem specific to intermittent power sources. Existing power grids already contain elements of uncertainty including sudden and large changes in demand and unforeseen power plant failures. Though power grids are already designed to have some capacity in excess of projected peak demand to deal with these problems, significant upgrades may be required to accommodate large amounts of intermittent power.

Several key terms are useful for understanding the issue of intermittent power sources. These terms are not standardized, and variations may be used. Most of these terms also apply to traditional power plants.

  • Intermittency or variability is the extent to which a power source fluctuates. This has two aspects: a predictable variability (such as the day-night cycle) and an unpredictable part (imperfect local weather forecasting). The term intermittent can be used to refer to the unpredictable part, with variable then referring to the predictable part.
  • Dispatchability is the ability of a given power source to increase and decrease output quickly on demand. The concept is distinct from intermittency; dispatchability is one of several ways system operators match supply (generator's output) to system demand (technical loads).
  • Penetration is the amount of electricity generated as a percentage of annual consumption.
  • Nominal power or nameplate capacity is the maximum output of a generating plant in normal operating conditions. This is the most common number used and is typically expressed in watts (including multiples like kW, MW, GW).
  • Capacity factor, average capacity factor, or load factor is the average expected output of a generator, usually over an annual period. It is expressed as a percentage of the nameplate capacity or in decimal form (e.g. 30% or 0.30).
  • Firm capacity or firm power is "guaranteed by the supplier to be available at all times during a period covered by a commitment".
  • Capacity credit: the amount of conventional (dispatchable) generation power that can be potentially removed from the system while keeping the reliability, usually expressed as a percentage of the nominal power.
  • Foreseeability or predictability is how accurately the operator can anticipate the generation: for example tidal power varies with the tides but is completely foreseeable because the orbit of the moon can be predicted exactly, and improved weather forecasts can make wind power more predictable.

Sources

Dammed hydroelectricity, biomass and geothermal are dispatchable as each has a store of potential energy; wind and solar without storage can be decreased, but not dispatched, other than when nature provides. Between wind and solar, solar has a more variable daily cycle than wind, but is more predictable in daylight hours than wind. Like solar, tidal energy varies between on and off cycles through each day, unlike solar there is no intermittency, tides are available every day without fail.

Wind power

Day ahead prediction and actual wind power

Grid operators use day ahead forecasting to determine which of the available power sources to use the next day, and weather forecasting is used to predict the likely wind power and solar power output available. Although wind power forecasts have been used operationally for decades, as of 2019 the IEA is organizing international collaboration to further improve their accuracy.

Erie Shores Wind Farm monthly output over a two-year period
 

Wind-generated power is a variable resource, and the amount of electricity produced at any given point in time by a given plant will depend on wind speeds, air density, and turbine characteristics (among other factors). If wind speed is too low then the wind turbines will not be able to make electricity, and if it is too high the turbines will have to be shut down to avoid damage. While the output from a single turbine can vary greatly and rapidly as local wind speeds vary, as more turbines are connected over larger and larger areas the average power output becomes less variable.

  • Intermittence: Regions smaller than synoptic scale (less than about 1000 km long, the size of an average country) have mostly the same weather and thus around the same wind power, unless local conditions favor special winds. Some studies show that wind farms spread over a geographically diverse area will as a whole rarely stop producing power altogether. However this is rarely the case for smaller areas with uniform geography such as Ireland, Scotland and Denmark which have several days per year with little wind power.
  • Capacity factor: Wind power typically has an annual capacity factor of 25–50%, with offshore wind outperforming onshore wind.
  • Dispatchability: Because wind power is not by itself dispatchable wind farms are sometimes built with storage.
  • Capacity credit: At low levels of penetration, the capacity credit of wind is about the same as the capacity factor. As the concentration of wind power on the grid rises, the capacity credit percentage drops.
  • Variability: Site dependent. Sea breezes are much more constant than land breezes. Seasonal variability may reduce output by 50%.
  • Reliability: A wind farm has high technical reliability when the wind blows. That is, the output at any given time will only vary gradually due to falling wind speeds or storms (the latter necessitating shut downs). A typical wind farm is unlikely to have to shut down in less than half an hour at the extreme, whereas an equivalent-sized power station can fail totally instantaneously and without warning. The total shutdown of wind turbines is predictable via weather forecasting. The average availability of a wind turbine is 98%, and when a turbine fails or is shut down for maintenance it only affects a small percentage of the output of a large wind farm.
  • Predictability: Although wind is variable, it is also predictable in the short term. There is an 80% chance that wind output will change less than 10% in an hour and a 40% chance that it will change 10% or more in 5 hours.

Because wind power is generated by large numbers of small generators, individual failures do not have large impacts on power grids. This feature of wind has been referred to as resiliency.

Solar power

Daily solar output at AT&T Park in San Francisco
 
Seasonal variation of the output of the solar panels at AT&T park in San Francisco

Intermittency inherently affects solar energy, as the production of renewable electricity from solar sources depends on the amount of sunlight at a given place and time. Solar output varies throughout the day and through the seasons, and is affected by dust, fog, cloud cover, frost or snow. Many of the seasonal factors are fairly predictable, and some solar thermal systems make use of heat storage to produce grid power for a full day.

  • Variability: In the absence of an energy storage system, solar does not produce power at night, little in bad weather and varies between seasons. In many countries, solar produces most energy in seasons with low wind availability and vice versa.
  • Capacity factor Standard photovoltaic solar has an annual average capacity factor of 10-20%, but panels that move and track the sun have a capacity factor up to 30%. Thermal solar parabolic trough with storage 56%. Thermal solar power tower with storage 73%.

The impact of intermittency of solar-generated electricity will depend on the correlation of generation with demand. For example, solar thermal power plants such as Nevada Solar One are somewhat matched to summer peak loads in areas with significant cooling demands, such as the south-western United States. Thermal energy storage systems like the small Spanish Gemasolar Thermosolar Plant can improve the match between solar supply and local consumption. The improved capacity factor using thermal storage represents a decrease in maximum capacity, and extends the total time the system generates power.

Run-of-the-river hydroelectricity

In many countries new large dams are no longer being built, because of the environmental impact of reservoirs. Run of the river projects have continued to be built. The absence of a reservoir results in both seasonal and annual variations in electricity generated.

Tidal power

Types of tide

Tidal power is the most predictable of all the variable renewable energy sources. The tides reverse twice a day, but they are never intermittent, on the contrary they are completely reliable. Only 20 sites in the world have yet been identified as possible tidal power stations.

Wave power

Waves are primarily created by wind, so the power available from waves tends to follow that available from wind, but due to the mass of the water is less variable than wind power. Wind power is proportional to the cube of the wind speed, while wave power is proportional to the square of the wave height.

Solutions for their integration

The displaced dispatchable generation could be coal, natural gas, biomass, nuclear, geothermal or storage hydro. Rather than starting and stopping nuclear or geothermal it is cheaper to use them as constant base load power. Any power generated in excess of demand can displace heating fuels, be converted to storage or sold to another grid. Biofuels and conventional hydro can be saved for later when intermittents are not generating power. Alternatives to burning coal and natural gas which produce fewer greenhouse gases may eventually make fossil fuels a stranded asset that is left in the ground. Highly integrated grids favor flexibility and performance over cost, resulting in more plants that operate for fewer hours and lower capacity factors.

All sources of electrical power have some degree of variability, as do demand patterns which routinely drive large swings in the amount of electricity that suppliers feed into the grid. Wherever possible, grid operations procedure are designed to match supply with demand at high levels of reliability, and the tools to influence supply and demand are well-developed. The introduction of large amounts of highly variable power generation may require changes to existing procedures and additional investments.

The capacity of a reliable renewable power supply, can be fulfilled by the use of backup or extra infrastructure and technology, using mixed renewables to produce electricity above the intermittent average, which may be used to meet regular and unanticipated supply demands. Additionally, the storage of energy to fill the shortfall intermittency or for emergencies can be part of a reliable power supply.

In practice, as the power output from wind varies, partially loaded conventional plants, which are already present to provide response and reserve, adjust their output to compensate. While low penetrations of intermittent power may use existing levels of response and spinning reserve, the larger overall variations at higher penetrations levels will require additional reserves or other means of compensation.

Operational reserve

All managed grids already have existing operational and "spinning" reserve to compensate for existing uncertainties in the power grid. The addition of intermittent resources such as wind does not require 100% "back-up" because operating reserves and balancing requirements are calculated on a system-wide basis, and not dedicated to a specific generating plant.

Some gas, or hydro power plants are partially loaded and then controlled to change as demand changes or to replace rapidly lost generation. The ability to change as demand changes is termed "response". The ability to quickly replace lost generation, typically within timescales of 30 seconds to 30 minutes, is termed "spinning reserve".

Generally thermal plants running as peaking plants will be less efficient than if they were running as base load. Hydroelectric facilities with storage capacity (such as the traditional dam configuration) may be operated as base load or peaking plants.

Grids can contract for grid battery plants, which provide immediately available power for an hour or so, which gives time for other generators to be started up in the event of a failure, and greatly reduces the amount of spinning reserve required.

Demand response

Demand response is a change in consumption of energy to better align with supply. It can take the form of switching off loads, or absorb additional energy to correct supply/demand imbalances. Incentives have been widely created in the American, British and French systems for the use of these systems, such as favorable rates or capital cost assistance, encouraging consumers with large loads to take them offline whenever there is a shortage of capacity, or conversely to increase load when there is a surplus.

Certain types of load control allow the power company to turn loads off remotely if insufficient power is available. In France large users such as CERN cut power usage as required by the System Operator - EDF under the encouragement of the EJP tariff.

Energy demand management refers to incentives to adjust use of electricity, such as higher rates during peak hours. Real-time variable electricity pricing can encourage users to adjust usage to take advantage of periods when power is cheaply available and avoid periods when it is more scarce and expensive. Some loads such as desalination plants, electric boilers and industrial refrigeration units, are able to store their output (water and heat). Several papers also concluded that Bitcoin mining loads would reduce curtailment, hedge electricity price risk, stabilize the grid, increase the profitability of renewable energy power stations and therefore accelerate transition to sustainable energy. But others argue that Bitcoin mining can never be sustainable.

Instantaneous demand reduction. Most large systems also have a category of loads which instantly disconnect when there is a generation shortage, under some mutually beneficial contract. This can give instant load reductions (or increases).

Storage

Construction of the Salt Tanks which provide efficient thermal energy storage so that output can be provided after the sun goes down, and output can be scheduled to meet demand requirements. The 280 MW Solana Generating Station is designed to provide six hours of energy storage. This allows the plant to generate about 38 percent of its rated capacity over the course of a year.
 
Learning curve of lithium-ion batteries: the price of batteries declined by 97% in three decades.

At times of low load where non-dispatchable output from wind and solar may be high, grid stability requires lowering the output of various dispatchable generating sources or even increasing controllable loads, possibly by using energy storage to time-shift output to times of higher demand. Such mechanisms can include:

Pumped storage hydropower is the most prevalent existing technology used, and can substantially improve the economics of wind power. The availability of hydropower sites suitable for storage will vary from grid to grid. Typical round trip efficiency is 80%.

Traditional lithium-ion is the most common type used for grid-scale battery storage as of 2020. Rechargeable flow batteries can serve as a large capacity, rapid-response storage medium. Hydrogen can be created through electrolysis and stored for later use.

Flywheel energy storage systems have some advantages over chemical batteries. Along with substantial durability which allows them to be cycled frequently without noticeable life reduction, they also have very fast response and ramp rates. They can go from full discharge to full charge within a few seconds. They can be manufactured using non-toxic and environmentally friendly materials, easily recyclable once the service life is over.

Thermal energy storage stores heat. Stored heat can be used directly for heating needs or converted into electricity. In the context of a CHP plant a heat storage can serve as a functional electricity storage at comparably low costs. Ice storage air conditioning Ice can be stored inter seasonally and can be used as a source of air-conditioning during periods of high demand. Present systems only need to store ice for a few hours but are well developed.

Storage of electrical energy results in some lost energy because storage and retrieval are not perfectly efficient. Storage also requires capital investment and space for storage facilities.

Geographic diversity and complementing technologies

Five days of hourly output of five wind farms in Ontario

The variability of production from a single wind turbine can be high. Combining any additional number of turbines (for example, in a wind farm) results in lower statistical variation, as long as the correlation between the output of each turbine is imperfect, and the correlations are always imperfect due to the distance between each turbine. Similarly, geographically distant wind turbines or wind farms have lower correlations, reducing overall variability. Since wind power is dependent on weather systems, there is a limit to the benefit of this geographic diversity for any power system.

Multiple wind farms spread over a wide geographic area and gridded together produce power more constantly and with less variability than smaller installations. Wind output can be predicted with some degree of confidence using weather forecasts, especially from large numbers of turbines/farms. The ability to predict wind output is expected to increase over time as data is collected, especially from newer facilities.

Electricity produced from solar energy tends to counterbalance the fluctuating supplies generated from wind. Normally it is windiest at night and during cloudy or stormy weather, and there is more sunshine on clear days with less wind. Besides, wind energy has often a peak in the winter season, whereas solar energy has a peak in the summer season; the combination of wind and solar reduces the need for dispatchable backup power.

  • In some locations, electricity demand may have a high correlation with wind output,particularly in locations where cold temperatures drive electric consumption (as cold air is denser and carries more energy).
  • The allowable penetration may be increased with further investment in standby generation. For instance some days could produce 80% intermittent wind and on the many windless days substitute 80% dispatchable power like natural gas, biomass and Hydro.
  • Areas with existing high levels of hydroelectric generation may ramp up or down to incorporate substantial amounts of wind. Norway, Brazil, and Manitoba all have high levels of hydroelectric generation, Quebec produces over 90% of its electricity from hydropower, and Hydro-Québec is the largest hydropower producer in the world. The U.S. Pacific Northwest has been identified as another region where wind energy is complemented well by existing hydropower. Storage capacity in hydropower facilities will be limited by size of reservoir, and environmental and other considerations.

Connecting grid internationally

It is often feasible to export energy to neighboring grids at times of surplus, and import energy when needed. This practice is common in Europe and between the US and Canada. Integration with other grids can lower the effective concentration of variable power: for instance, Denmark's high penetration of VRE, in the context of the German/Dutch/Scandinavian grids with which it has interconnections, is considerably lower as a proportion of the total system. Hydroelectricity that compensates for variability can be used across countries.

The capacity of power transmission infrastructure may have to be substantially upgraded to support export/import plans. Some energy is lost in transmission. The economic value of exporting variable power depends in part on the ability of the exporting grid to provide the importing grid with useful power at useful times for an attractive price.

Sector coupling

Demand and generation can be better matched when sectors such as mobility, heat and gas are coupled with the power system. The electric vehicle market is for instance expected to become the largest source of storage capacity. This may be a more expensive option appropriate for high penetration of variable renewables, compared to other sources of flexibility. The International Energy Agency says that sector coupling is needed to compensate for the mismatch between seasonal demand and supply.

Electric vehicles can be charged during periods of low demand and high production, and in some places send power back from the vehicle-to-grid.

Penetration

Penetration refers to the proportion of a primary energy (PE) source in an electric power system, expressed as a percentage. There are several methods of calculation yielding different penetrations. The penetration can be calculated either as:

  1. the nominal capacity (installed power) of a PE source divided by the peak load within an electric power system; or
  2. the nominal capacity (installed power) of a PE source divided by the total capacity of the electric power system; or
  3. the electrical energy generated by a PE source in a given period, divided by the demand of the electric power system in this period.

The level of penetration of intermittent variable sources is significant for the following reasons:

  • Power grids with significant amounts of dispatchable pumped storage, hydropower with reservoir or pondage or other peaking power plants such as natural gas-fired power plants are capable of accommodating fluctuations from intermittent power more easily.
  • Relatively small electric power systems without strong interconnection (such as remote islands) may retain some existing diesel generators but consuming less fuel, for flexibility until cleaner energy sources or storage such as pumped hydro or batteries become cost-effective.

In the early 2020s wind and solar produce 10% of the world's electricity, but supply in the 40-55% penetration range has already been implemented in several systems, with over 65% planned for the UK by 2030.

There is no generally accepted maximum level of penetration, as each system's capacity to compensate for intermittency differs, and the systems themselves will change over time. Discussion of acceptable or unacceptable penetration figures should be treated and used with caution, as the relevance or significance will be highly dependent on local factors, grid structure and management, and existing generation capacity.

For most systems worldwide, existing penetration levels are significantly lower than practical or theoretical maximums.

Maximum penetration limits

Maximum penetration of combined wind and solar is estimated at around 70% to 90% without regional aggregation, demand management or storage; and up to 94% with 12 hours of storage. Economic efficiency and cost considerations are more likely to dominate as critical factors; technical solutions may allow higher penetration levels to be considered in future, particularly if cost considerations are secondary.

Economic impacts of variability

Estimates of the cost of wind and solar energy may include estimates of the "external" costs of wind and solar variability, or be limited to the cost of production. All electrical plant has costs that are separate from the cost of production, including, for example, the cost of any necessary transmission capacity or reserve capacity in case of loss of generating capacity. Many types of generation, particularly fossil fuel derived, will also have cost externalities such as pollution, greenhouse gas emission, and habitat destruction which are generally not directly accounted for. The magnitude of the economic impacts is debated and will vary by location, but is expected to rise with higher penetration levels. At low penetration levels, costs such as operating reserve and balancing costs are believed to be insignificant.

Intermittency may introduce additional costs that are distinct from or of a different magnitude than for traditional generation types. These may include:

  • Transmission capacity: transmission capacity may be more expensive than for nuclear and coal generating capacity due to lower load factors. Transmission capacity will generally be sized to projected peak output, but average capacity for wind will be significantly lower, raising cost per unit of energy actually transmitted. However transmission costs are a low fraction of total energy costs.
  • Additional operating reserve: if additional wind and solar does not correspond to demand patterns, additional operating reserve may be required compared to other generating types, however this does not result in higher capital costs for additional plants since this is merely existing plants running at low output - spinning reserve. Contrary to statements that all wind must be backed by an equal amount of "back-up capacity", intermittent generators contribute to base capacity "as long as there is some probability of output during peak periods". Back-up capacity is not attributed to individual generators, as back-up or operating reserve "only have meaning at the system level".
  • Balancing costs: to maintain grid stability, some additional costs may be incurred for balancing of load with demand. Although improvements to grid balancing can be costly, they can lead to long term savings.

In many countries for many types of variable renewable energy, from time to time the government invites companies to tender sealed bids to construct a certain capacity of solar power to connect to certain electricity substations. By accepting the lowest bid the government commits to buy at that price per kWh for a fixed number of years, or up to a certain total amount of power. This provides certainty for investors against highly volatile wholesale electricity prices. However they may still risk exchange rate volatility if they borrowed in foreign currency.

Regulation and grid planning

Britain

The operator of the British electricity system has said that it will be capable of operating zero-carbon by 2025, whenever there is enough renewable generation, and may be carbon negative by 2033. The company, National Grid Electricity System Operator, states that new products and services will help reduce the overall cost of operating the system.

Tariffs in United States history

From Wikipedia, the free encyclopedia

Tariffs have historically served a key role in the trade policy of the United States. Their purpose was to generate revenue for the federal government and to allow for import substitution industrialization (industrialization of a nation by replacing foreign imports with domestic production) by acting as a protective barrier around infant industries. They also aimed to reduce the trade deficit and the pressure of foreign competition. Tariffs were one of the pillars of the American System that allowed the rapid development and industrialization of the United States. The United States pursued a protectionist policy from the beginning of the 19th century until the middle of the 20th century. Between 1861 and 1933, they had one of the highest average tariff rates on manufactured imports in the world. However American agricultural and industrial were cheaper than rival products and the tariff had an impact primarily on wool products. After 1942 the U.S. promoted worldwide free trade.

According to Dartmouth economist Douglas Irwin, tariffs have serve three primary purposes: "to raise revenue for the government, to restrict imports and protect domestic producers from foreign competition, and to reach reciprocity agreements that reduce trade barriers." From 1790 to 1860, average tariffs increased from 20 percent to 60 percent before declining again to 20 percent. From 1861 to 1933, which Irwin characterizes as the "restriction period", the average tariffs increased to 50 percent and remained at that level for several decades. From 1934 onwards, which Irwin characterizes as the "reciprocity period", the average tariff declined substantially until it leveled off at 5 percent.

Tariff revenues

Tariffs were the greatest (approaching 95% at times) source of federal revenue until the federal income tax began after 1913. For well over a century the federal government was largely financed by tariffs averaging about 20% on foreign imports. At the end of the American Civil War in 1865 about 63% of Federal income was generated by the excise taxes, which exceeded the 25.4% generated by tariffs. In 1915 during World War I tariffs generated only 30.1% of revenues. Since 1935 tariff income has continued to be a declining percentage of Federal tax income.

Historical trends

Federal taxes by type.pdf
Average tariff rates (France, UK, US)
 
Average Tariff Rates in US (1821–2016)
 
U.S. Trade Balance and Trade Policy (1895–2015)
 
Average Tariff Rates for Selected Countries (1913–2007)
 
Average Tariff Rates on manufactured products
 
Average Levels of Duties (1875 and 1913)
 

After the United States achieved independence in 1783, under the Articles of Confederation, the U.S. federal government, could not collect taxes directly but had to "request" money from each state—an almost fatal flaw for a federal government. Lack of ability to tax directly was one of several major flaws in the Articles of Confederation. The ability to tax directly was addressed in the drafting of the United States Constitution in May to September 1787 Constitutional Convention (United States) in Philadelphia. It came into effect in 1789. It specified that the United States House of Representatives has to originate all tax and tariff laws. The new government needed a way to collect taxes from all the states that were easy to enforce and had only a nominal cost to the average citizen. They had just finished a war on "Taxation without Representation". The Tariff of 1789 was the second bill signed by President George Washington imposing a tariff of about 5% on nearly all imports, with a few exceptions. In 1790 the United States Revenue Cutter Service was established to primarily enforce and collect the import tariffs. This service later became the United States Coast Guard.

Many American intellectuals and politicians during the country's catching-up period felt that the free trade theory advocated by British classical economists was not suited to their country. They argued that the country should develop manufacturing industries and use government protection and subsidies for this purpose, as Britain had done before them. Many of the great American economists of the time, until the last quarter of the 19th century, were strong advocates of industrial protection: Daniel Raymond who influenced Friedrich List, Mathew Carey and his son Henry, who was one of Lincoln's economic advisers. The intellectual leader of this movement was Alexander Hamilton, the first Secretary of the Treasury of the United States (1789-1795). Thus, it was against David Ricardo's theory of comparative advantage that the United States protected its industry. They pursued a protectionist policy from the beginning of the 19th century until the middle of the 20th century, after the Second World War.

In Report on Manufactures which is considered the first text to express modern protectionist theory, Alexander Hamilton argued that if a country wished to develop a new activity on its soil, it would have to temporarily protect it. According to him, this protection against foreign producers could take the form of import duties or, in rare cases, prohibition of imports. He called for customs barriers to allow American industrial development and to help protect infant industries, including bounties (subsidies) derived in part from those tariffs. He also believed that duties on raw materials should be generally low. Hamilton argued that despite an initial "increase of price" caused by regulations that control foreign competition, once a "domestic manufacture has attained to perfection… it invariably becomes cheaper".

Alexander Hamilton and Daniel Raymond were among the first theorists to present the infant industry argument. Hamilton was the first to use the term "infant industries" and to introduce it to the forefront of economic thinking. He believed that political independence was predicated upon economic independence. Increasing the domestic supply of manufactured goods, particularly war materials, was seen as an issue of national security. And he feared that Britain's policy towards the colonies would condemn the United States to be only producers of agricultural products and raw materials.

Britain initially did not want to industrialize the American colonies, and implemented policies to that effect (for example, banning high value-added manufacturing activities). Under British rule, America was denied the use of tariffs to protect its new industries. Thus, the American Revolution was, to some extent, a war against this policy, in which the commercial elite of the colonies rebelled against being forced to play a lesser role in the emerging Atlantic economy. This explains why, after independence, the Tariff Act of 1789 was the second bill of the Republic signed by President Washington allowing Congress to impose a fixed tariff of 5% on all imports, with a few exceptions

The Congress passed a tariff act (1789), imposing a 5% flat rate tariff on all imports. Between 1792 and the war with Britain in 1812, the average tariff level remained around 12.5%. In 1812 all tariffs were doubled to an average of 25% in order to cope with the increase in public expenditure due to the war. A significant shift in policy occurred in 1816, when a new law was introduced to keep the tariff level close to the wartime level—especially protected were cotton, woolen, and iron goods. The American industrial interests that had blossomed because of the tariff lobbied to keep it, and had it raised to 35 percent in 1816. The public approved, and by 1820, America's average tariff was up to 40 percent.

In the 19th century, statesmen such as Senator Henry Clay continued Hamilton's themes within the Whig Party under the name "American System which consisted of protecting industries and developing infrastructure in explicit opposition to the "British system" of free trade.

The American Civil War (1861-1865) was partially fought over the issue of tariffs. The agrarian interests of the South were opposed to any protection, while the manufacturing interests of the North wanted to maintain it. The fledgling Republican Party led by Abraham Lincoln, who called himself a "Henry Clay tariff Whig", strongly opposed free trade. Early in his political career, Lincoln was a member of the protectionist Whig Party and a supporter of Henry Clay. In 1847, he declared: "Give us a protective tariff, and we shall have the greatest nation on earth". He implemented a 44-percent tariff during the Civil War—in part to pay for railroad subsidies and for the war effort, and to protect favored industries. Tariffs remained at this level even after the war, thus the victory of the North in the Civil War ensured that the United States remained one of the greatest practitioners of tariff protection for industry.

From 1871 to 1913, "the average U.S. tariff on dutiable imports never fell below 38 percent [and] gross national product (GNP) grew 4.3 percent annually, twice the pace in free trade Britain and well above the U.S. average in the 20th century," notes Alfred Eckes Jr, chairman of the U.S. International Trade Commission under President Reagan.

In 1896, the GOP pledged platform pledged to "renew and emphasize our allegiance to the policy of protection, as the bulwark of American industrial independence, and the foundation of development and prosperity. This true American policy taxes foreign products and encourages home industry. It puts the burden of revenue on foreign goods; it secures the American market for the American producer. It upholds the American standard of wages for the American workingman".

In 1913, following the electoral victory of the Democrats in 1912, there was a significant reduction in the average tariff on manufactured goods from 44% to 25%. However, the First World War rendered this bill ineffective, and new "emergency" tariff legislation was introduced in 1922, after the Republicans returned to power in 1921.

According to Ha-Joon Chang, the United States, while being protectionist, was the fastest growing economy in the world throughout the 19th century and into the 1920s. It was only after the Second World War that the U.S. liberalized its trade (although not as unequivocally as Britain did in the mid-nineteenth century).

Colonial Era to 1789

In the colonial era, before 1775, nearly every colony levied its own tariffs, usually with lower rates for British products. There were taxes on ships (on a tonnage basis), import taxes on slaves, export taxes on tobacco, and import taxes on alcoholic beverages. The London government insisted on a policy of mercantilism whereby only British ships could trade in the colonies. In defiance, some American merchants engaged in smuggling.

During the Revolution, the British blockade from 1775 to 1783 largely ended foreign trade. In the 1783–89 Confederation Period, each state set up its own trade rules, often imposing tariffs or restrictions on neighboring states. The new Constitution, which went into effect in 1789, banned interstate tariffs or trade restrictions, as well as state taxes on exports.

Early National period, 1789–1828

The framers of the United States Constitution gave the federal government authority to tax, stating that Congress has the power to "... lay and collect taxes, duties, imposts and excises, pay the debts and provide for the common defense and general welfare of the United States." and also "To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes." Tariffs between states is prohibited by the U.S. Constitution, and all domestically made products can be imported or shipped to another state tax-free.

Responding to an urgent need for revenue and a trade imbalance with England that was fast destroying the infant American industries and draining the nation of its currency, the First United States Congress passed, and President George Washington signed, the Hamilton Tariff of 1789, which authorized the collection of duties on imported goods. Customs duties as set by tariff rates up to 1860 were usually about 80–95% of all federal revenue. Having just fought a war over taxation (among other things) the U.S. Congress wanted a reliable source of income that was relatively unobtrusive and easy to collect. It also sought to protect the infant industries that had developed during the war but which were now threatened by cheaper imports, especially from England. Tariffs and excise taxes were authorized by the United States Constitution and recommended by the first United States Secretary of the Treasury, Alexander Hamilton in 1789 to tax foreign imports and set up low excise taxes on whiskey and a few other products to provide the Federal Government with enough money to pay its operating expenses and to redeem at full value U.S. Federal debts and the debts the states had accumulated during the Revolutionary War. The Congress set low excise taxes on only a few goods, such as, whiskey, rum, tobacco, snuff and refined sugar. The tax on whiskey was highly controversial and set off massive protests by Western Farmers in the Whiskey Rebellion of 1794, which was suppressed by General Washington at the head of an army. The whiskey excise tax collected so little and was so despised it was abolished by President Thomas Jefferson in 1802.

All tariffs were on a long list of goods (dutiable goods) with different customs rates and some goods on a "free" list. Books and publications were nearly always on the free list. Congress spent enormous amounts of time figuring out these tariff import tax schedules.

With tariffs providing the basic federal revenue, an embargo on trade, or an enemy blockade, would threaten havoc. This happened in connection with the American economic warfare against Britain in the 1807–15 period. In 1807 imports dropped by more than half and some products became much more expensive or unobtainable. Congress passed the Embargo Act of 1807 and the Non-Intercourse Act (1809) to punish British and French governments for their actions; unfortunately their main effect was to reduce imports even more. The War of 1812 brought a similar set of problems as U.S. trade was again restricted by British naval blockades. The fiscal crisis was made much worse by the abolition of the First Bank of the U.S., which was the national bank. It was reestablished right after the war.

The lack of imported goods relatively quickly gave very strong incentives to start building several U.S. industries in the Northeast. Textiles and machinery manufacturing plants especially grew. Many new industries were set up and run profitably during the wars and about half of them failed after hostilities ceased and normal import competition resumed. Industry in the U.S. was advancing up the skill set, innovation knowledge and organization curve as they adapted to the Industrial Revolution's new machines and techniques.

The Tariff Act of 1789 imposed the first national source of revenue for the newly formed United States. The new U.S. Constitution ratified in 1789, allowed only the federal government to levy uniform tariffs. Only the federal government could set tariff rates (customs), so the old system of separate state rates disappeared. The new law taxed all imports at rates from 5 to 15 percent. These rates were primarily designed to generate revenue to pay the annual expenses of the federal government and the national debt and the debts the states had accumulated during the American War of Independence and to also promote manufactures and independence from foreign nations, especially for defense needs. Hamilton believed that all Revolutionary War debt should be paid in full to establish and keep U.S. financial credibility. In addition to income in his Report on Manufactures Treasury Secretary Alexander Hamilton proposed a far-reaching plan to use protective tariffs as a lever for rapid industrialization. In the late 18th century the industrial age was just starting and the United States had little or no textile industry—the heart of the early Industrial Revolution. The British government having just lost the Revolutionary War tried to maintain their near monopoly on cheap and efficient textile manufacturing by prohibiting the export of textile machines, machine models or the emigration of people familiar with these machines. Clothing in the early United States was nearly all hand made by a very time consuming and expensive process—just like it had been made for centuries before. The new textile manufacturing techniques in Britain were often over thirty times cheaper as well as being easier to use, more efficient and productive. Hamilton believed that a stiff tariff on imports would not only raise income but "protect" and help subsidize early efforts at setting up manufacturing facilities that could compete with British products.

Samuel Slater in 1789 emigrated (illegally since he was familiar with textile manufacturing) from Britain. Looking for opportunities he heard of the failing attempts at making cotton mills in Pawtucket, Rhode Island. Contacting the owners he promised to see if he could fix their mills—they offered him a full partnership if he succeeded. Declaring their early attempts unworkable he proceeded from January 1790 to December 1790 to build the first operational textile manufacturing facility in the United States. The Industrial Revolution was off and running in the United States. Initially the cost of their textiles was slightly higher than the cost of equivalent British goods but the tariff helped protect their early start-up industry.

Ashley notes that:

From 1790 onwards there were constant alterations in the tariff between 1792 and 1816 there were some twenty-five Tariff Acts passed, all modifying the customs duties in one way or another. But Hamilton's Report, and the ideas it embodied, do not seem to have exercised any special influence on the legislation of this period; the motives were always financial.

Higher tariffs were adopted during and after the War of 1812, when nationalists such as Henry Clay and John C. Calhoun saw the need for more federal income and more industry. In wartime, they declared, having a home industry was a necessity to avoid shortages. Likewise owners of the small new factories that were springing up in the northeast to mass-produce boots, hats, nails and other common items wanted higher tariffs that would significantly protect them when the more efficient British producers returned after the war ended. A 10% discount on the customs tax was offered on items imported in American ships, so that the American merchant marine would be supported.

Once industrialization and mass production started, the demand for higher and higher tariffs came from manufacturers and factory workers. They believed that their businesses should be protected from the lower wages and more efficient factories of Britain and the rest of Europe. Nearly every northern Congressman was eager to logroll a higher tariff rate for his local industry. Senator Daniel Webster, formerly a spokesperson for Boston's merchants who imported goods (and wanted low tariffs), switched dramatically to represent the manufacturing interests in the Tariff of 1824. Rates were especially high for bolts of cloth and for bar iron, of which Britain was a low-cost producer. The culmination came in the Tariff of 1828, ridiculed by free traders as the "Tariff of Abominations", with import custom duties averaging over 25 percent. Intense political opposition to higher tariffs came from Southern Democrats and plantation owners in South Carolina who had little manufacturing industry and imported some products with high tariffs. They would have to pay more for imports. They claimed their economic interest was being unfairly injured. They attempted to "nullify" the federal tariff and spoke of secession from the Union (see the Nullification Crisis). President Andrew Jackson let it be known he would use the U.S. Army to enforce the law, and no state supported the South Carolina call for nullification. A compromise ended the crisis included a lowering of the average tariff rate over ten years to a rate of 15% to 20%.

Second Party System, 1829–1859

The Democrats dominated the Second Party System and set low tariffs designed to pay for the government but not protect industry. Their opponents the Whigs wanted high protective tariffs but usually were outvoted in Congress. Tariffs soon became a major political issue as the Whigs (1832–1852) and (after 1854) the Republicans wanted to protect their mostly northern industries and constituents by voting for higher tariffs and the Southern Democrats, which had very little industry but imported many goods voted for lower tariffs. Each party as it came into power voted to raise or lower tariffs under the constraints that the Federal Government always needed a certain level of revenues. The United States public debt was paid off in 1834 and President Andrew Jackson, a strong Southern Democrat, oversaw the cutting of the tariff rates roughly in half and eliminating nearly all federal excise taxes in about 1835.

Henry Clay and his Whig Party, envisioning a rapid modernization based on highly productive factories, sought a high tariff. Their key argument was that startup factories, or "infant industries", would at first be less efficient than European (British) producers. Furthermore, American factory workers were paid higher wages than their European competitors. The arguments proved highly persuasive in industrial districts. Clay's position was adopted in the 1828 and 1832 Tariff Acts. The Nullification Crisis forced a partial abandonment of the Whig position. When the Whigs won victories in the 1840 and 1842 elections, taking control of Congress, they re-instituted higher tariffs with the Tariff of 1842. In examining these debates Moore finds that they were not precursors to Civil War. Instead they looked backward and continued the old debate whether foreign trade policy should embrace free trade or protectionism.

Walker Tariff

The Democrats won in 1845, electing James K. Polk as president. Polk succeeded in passing the Walker tariff of 1846 by uniting the rural and agricultural factions of the entire country for lower tariffs. They sought a level of a "tariff for revenue only" that would pay the cost of government but not show favoritism to one section or economic sector at the expense of another. The Walker Tariff actually increased trade with Britain and others and brought in more revenue to the federal treasury than the higher tariff. The average tariff on the Walker Tariff was about 25%. While protectionists in Pennsylvania and neighboring states were angered, the South achieved its goal of setting low tariff rates before the Civil War.

Low tariff of 1857

The Walker Tariff remained in place until 1857, when a nonpartisan coalition lowered them again with the Tariff of 1857 to 18%. This was in response to the British repeal of their protectionist "Corn Laws".

The Democrats in Congress, dominated by Southern Democrats, wrote and passed the tariff laws in the 1830s, 1840s, and 1850s, and kept reducing rates, so that the 1857 rates were down to about 15%, a move that boosted trade so overwhelmingly that revenues actually increased, from just over $20 million in 1840 ($0.5 billion in 2020 dollars), to more than $80 million by 1856 ($1.8 billion). The South had almost no complaints but the low rates angered many Northern industrialists and factory workers, especially in Pennsylvania, who demanded protection for their growing iron industry. The Republican Party replaced the Whigs in 1854 and also favored high tariffs to stimulate industrial growth; it was part of the 1860 Republican platform.

Third Party System

After the Second Party System ended in 1854 the Democrats lost control and the new Republican Party had its opportunity to raise rates. The Morrill Tariff significantly raising tariff rates became possible only after the Southern Senators walked out of Congress when their states left the Union, leaving a Republican majority. It was signed by Democratic President James Buchanan in early March 1861 shortly before President Abraham Lincoln took office. Pennsylvania iron mills and New England woolen mills mobilized businessmen and workers to call for high tariffs, but Republican merchants wanted low tariffs. The high tariff advocates lost in 1857, but stepped up their campaign by blaming the economic recession of 1857 on the lower rates. Economist Henry Charles Carey of Philadelphia was the most outspoken advocate, along with Horace Greeley and his influential newspaper, the New York Tribune. Increases were finally enacted in February 1861 after Southerners resigned their seats in Congress on the eve of the Civil War.

Some historians in recent decades have minimized the tariff issue as a cause of the war, noting that few people in 1860–61 said it was of central importance to them. Compromises were proposed in 1860–61 to save the Union, but they did not involve the tariff. Arguably, the effects of a tariff enacted in March 1861 could have made little effect upon any delegation which met prior to its signing. It is indicative of the Northern industrial supported and anti-agrarian position of the 1861 Republican-controlled congress. Some secessionist documents do mention a tariff issue, though not nearly as often as the preservation of the institution of slavery. However, a few libertarian economists place more importance on the tariff issue. The arguments that tariffs were a major cause of the Civil War have become a staple of the Lost Cause of the Confederacy.

1860–1912

Civil War

During the war far more revenue was needed, so the rates were raised again and again, along with many other taxes such as excise taxes on luxuries and income taxes on the rich. By far most of the wartime government revenue came from bonds and loans ($2.6 billion), not taxes ($357 million) or tariffs ($305 million).

The Morrill Tariff took effect a few weeks before the war began on April 12, 1861, and was not collected in the South. The Confederate States of America (CSA) passed its own tariff of about 15% on most items, including many items that previously were duty-free from the North. Previously tariffs between states were prohibited. The Confederates believed that they could finance their government by tariffs. The anticipated tariff revenue never appeared as the Union Navy blockaded their ports and the Union army restricted their trade with the Northern states. The Confederacy collected a mere $3.5 million in tariff revenue from the Civil War start to end and had to resort to inflation and confiscation instead for revenue.

Reconstruction era

Historian Howard K. Beale argued that high tariffs were needed during the Civil War, but were retained after the war for the benefit of Northern industrialists, who would otherwise lose markets and profits. To keep political control of Congress, Beale argued, Northern Industrialists worked through the Republican Party and supported Reconstruction policies that kept low-tariff Southern whites out of power. The Beale thesis was widely disseminated by the influential survey of Charles A. Beard, The Rise of American Civilization (1927).

In the late 1950s historians rejected the Beale–Beard thesis by showing that Northern businessmen were evenly divided on the tariff, and were not using Reconstruction policies to support it.

Politics of protection

The iron and steel industry, and the wool industry, were the well-organized interests groups that demanded (and usually obtained) high tariffs through support of the Republican Party. Industrial workers had much higher wages than their European counterparts, and they credited it to the tariff and voted Republican.

Democrats were divided on the issue, in large part because of pro-tariff elements in the Pennsylvania party who wanted to protect the growing iron industry, as well as pockets of high tariff support in nearby industrializing states. However President Grover Cleveland made low tariffs the centerpiece of Democratic Party policies in the late 1880s. His argument is that high tariffs were an unnecessary and unfair tax on consumers. The South and West generally supported low tariffs, and the industrial East high tariffs. Republican William McKinley was the outstanding spokesman for high tariffs, promising it would bring prosperity for all groups.

After the Civil War, high tariffs remained as the Republican Party remained in office and the Southern Democrats were restricted from office. Advocates insisted that tariffs brought prosperity to the nation as a whole and no one was really injured. As industrialization proceeded apace throughout the Northeast, some Democrats, especially Pennsylvanians, became high tariff advocates.

Farmers and wool

The Republican high-tariff advocates appealed to farmers with the theme that high-wage factory workers would pay premium prices for foodstuffs. This was the "home market" idea, and it won over most farmers in the Northeast, but it had little relevance to the southern and western farmers who exported most of their cotton, tobacco and wheat. In the late 1860s the wool manufacturers (based near Boston and Philadelphia) formed the first national lobby, and cut deals with wool-growing farmers in several states. Their challenge was that fastidious wool producers in Britain and Australia marketed a higher quality fleece than the Americans, and that British manufacturers had costs as low as the American mills. The result was a wool tariff that helped the farmers by a high tariff rate on imported wool—a tariff the American manufacturers had to pay—together with a high tariff on finished woolens and worsted goods.

U.S. industrial output

Apart from wool and woolens, American industry and agriculture—and industrial workers—had become the most efficient in the world in most industries by the 1880s as they took the lead in the Industrial Revolution. No other country had the industrial capacity, large market, high efficiency and low costs, or the complex distribution system needed to compete in most markets in the vast American market. Most imports were a few "luxury" goods. Indeed, it was the British who watched cheaper American products flooded their home islands. The London Daily Mail in 1900 complained:

We have lost to the American manufacturer electrical machinery, locomotives, steel rails, sugar-producing and agricultural machinery, and latterly even stationary engines, the pride and backbone of the British engineering industry.

Nevertheless, some American manufacturers and union workers demanded the high tariff be maintained. The tariff represented a complex balance of forces. Railroads, for example, consumed vast quantities of steel. To the extent tariffs raised steel prices, they paid much more making possible the U.S steel industry's massive investment to expand capacity and switch to the Bessemer process and later to the open hearth furnace. Between 1867 and 1900 U.S. steel production increased more than 500 times from 22,000 tons to 11,400,000 tons and Bessemer steel rails, first made in the U.S that would last 18 years under heavy traffic, would come to replace the old wrought iron rail that could only endure two years under light service. Taussig says that in 1881, British steel rails sold for $31 a ton, and if Americans imported them they paid a $28/ton tariff, giving $59/ton for an imported ton of rails. American mills charged $61/ton and made a good profit, which was then reinvested into increased capacity, higher quality steels, higher wages and benefits and more efficient production. By 1897 the American steel rail price had dropped to $19.60 per ton compared to the British price at $21.00—not including the $7.84 duty charge—demonstrating that the tariff had performed its purpose of giving the industry time to become competitive. Then the U.S. steel industry became an exporter of steel rail to England selling below the British price and during WW I would become the largest supplier of steel to the allies. From 1915 through 1918, the largest American steel company, U.S. Steel, alone delivered more steel each year than Germany and Austria-Hungary combined, totaling 99,700,000 tons during WW I. The Republicans became masters of negotiating exceedingly complex arrangements so that inside each of their congressional districts there were more satisfied "winners" than disgruntled "losers". The tariff after 1880 was an ideological relic with no longer any economic rationale.

Cleveland tariff policy

Democratic President Grover Cleveland redefined the issue in 1887, with his stunning attack on the tariff as inherently corrupt, opposed to true republicanism, and inefficient to boot: "When we consider that the theory of our institutions guarantees to every citizen the full enjoyment of all the fruits of his industry and enterprise... it is plain that the exaction of more than [minimal taxes] is indefensible extortion and a culpable betrayal of American fairness and justice." The election of 1888 was fought primarily over the tariff issue, and Cleveland lost. Republican Congressman William McKinley argued,

Free foreign trade gives our money, our manufactures, and our markets to other nations to the injury of our labor, our tradespeople, and our farmers. Protection keeps money, markets, and manufactures at home for the benefit of our own people.

Democrats campaigned energetically against the high McKinley tariff of 1890, and scored sweeping gains that year; they restored Cleveland to the White House in 1892. The severe depression that started in 1893 ripped apart the Democratic party. Cleveland and the pro-business Bourbon Democrats insisted on a much lower tariff. His problem was that Democratic electoral successes had brought in Democratic congressmen from industrial districts who were willing to raise rates to benefit their constituents. The Wilson–Gorman Tariff Act of 1894 did lower overall rates from 50 percent to 42 percent, but contained so many concessions to protectionism that Cleveland refused to sign it (it became law anyway).

McKinley tariff policy

President Teddy Roosevelt watches GOP team pull apart on tariff issue

McKinley campaigned heavily in 1896 on the high tariff as a positive solution to depression. Promising protection and prosperity to every economic sector, he won a smashing victory. The Republicans rushed through the Dingley tariff in 1897, boosting rates back to the 50 percent level. Democrats responded that the high rates created government sponsored "trusts" (monopolies) and led to higher consumer prices. McKinley won reelection by an even bigger landslide and started talking about a post-tariff era of reciprocal trade agreements. Reciprocity went nowhere; McKinley's vision was a half century too early. The Republicans split bitterly on the Payne–Aldrich Tariff of 1909. Republican President Theodore Roosevelt (1901–1909) saw the tariff issue was ripping his party apart, so he postponed any consideration of it. The delicate balance flew apart on under Republican William Howard Taft. He campaigned for president in 1908 for tariff "reform", which everyone assumed meant lower rates. The House lowered rates with the Payne Bill, then sent it to the Senate where Nelson Wilmarth Aldrich mobilized high-rate Senators. Aldrich was a New England businessman and a master of the complexities of the tariff, the Midwestern Republican insurgents were rhetoricians and lawyers who distrusted the special interests and assumed the tariff was "sheer robbery" at the expense of the ordinary consumer. Rural America believed that its superior morality deserved special protection, while the dastardly immorality of the trusts—and cities generally—merited financial punishment. Aldrich baited them. Did the insurgents want lower tariffs? His wickedly clever Payne–Aldrich Tariff Act of 1909 lowered the protection on Midwestern farm products, while raising rates favorable to his Northeast.

By 1913 with the new income tax generating revenue, the Democrats in Congress were able to reduce rates with the Underwood Tariff. The outbreak of war in 1914 made the impact of tariffs of much less importance compared to war contracts. When the Republicans returned to power they returned the rates to a high level in the Fordney–McCumber Tariff of 1922. The next raise came with the Smoot–Hawley Tariff Act of 1930 at the start of the Great Depression.

Tariff with Canada

The Canadian–American Reciprocity Treaty increased trade between 1855 and its ending in 1866. When it ended Canada turned to tariffs. The National Policy was a Canadian economic program introduced by John A. Macdonald's Conservative Party in 1879 after it returned to power. It had been an official policy, however, since 1876. It was based on high tariffs to protect Canada's manufacturing industry. Macdonald campaigned on the policy in the 1878 election, and handily beat the Liberal Party, which supported free trade.

Efforts to restore free trade with Canada collapsed when Canada rejected a proposed reciprocity treaty in fear of American imperialism in the 1911 federal election. Taft negotiated a reciprocity agreement with Canada, that had the effect of sharply lowering tariffs. Democrats supported the plan but Midwestern Republicans bitterly opposed it. Barnstorming the country for his agreement, Taft undiplomatically pointed to the inevitable integration of the North American economy, and suggested that Canada should come to a "parting of the ways" with Britain. Canada's Conservative Party, under the leadership of Robert Borden, now had an issue to regain power from the low-tariff Liberals; after a surge of pro-imperial anti-Americanism, the Conservatives won. Ottawa rejected reciprocity, reasserted the National Policy and went to London first for new financial and trade deals. The Payne Aldrich Tariff of 1909 actually changed little and had slight economic impact one way or the other, but the political impact was enormous. The insurgents felt tricked and defeated and swore vengeance against Wall Street and its minions Taft and Aldrich. The insurgency led to a fatal split down the middle in 1912 as the GOP lost its balance wheel.

1913 to present

Starting in the Civil War, protection was the ideological cement holding the Republican coalition together. High tariffs were used to promise higher sales to business, higher wages to industrial workers, and higher demand for their crops to farmers. Democrats said it was a tax on the little man. After 1900 Progressive insurgents said it promoted monopoly. It had greatest support in the Northeast, and greatest opposition in the South and West. The Midwest was the battle ground. The tariff issue was pulling the GOP apart. Roosevelt tried to postpone the issue, but Taft had to meet it head on in 1909 with the Payne–Aldrich Tariff Act. Eastern conservatives led by Nelson W. Aldrich wanted high tariffs on manufactured goods (especially woolens), while Midwesterners called for low tariffs. Aldrich outmaneuvered them by lowering the tariff on farm products, which outraged the farmers. The great battle over the high Payne–Aldrich Tariff Act in 1910 ripped the Republicans apart and set up the realignment in favor of the Democrats.

Woodrow Wilson made a drastic lowering of tariff rates a major priority for his presidency. The 1913 Underwood Tariff cut rates, but the coming of World War I in 1914 radically revised trade patterns. Reduced trade and, especially, the new revenues generated by the federal income tax made tariffs much less important in terms of economic impact and political rhetoric. The Wilson administration desired a 'revamping' of the current banking system, "... so that the banks may be the instruments, not the masters, of business and of individual enterprise and initiative.". President Wilson achieved this in the Federal Reserve Act of 1913. Working with the bullish Senator Aldrich and former presidential candidate William Jennings Bryan, he perfected a way to centralize the banking system to allow Congress to closely allocate paper money production. The Federal Reserve Act, with the Sixteenth Amendment of the Constitution, would create a trend of new forms of government funding. Ihe Democrats lowered the tariff in 1913 but the economic dislocations of the First World War made it irrelevant. When the Republicans returned to power in 1921 they again imposed a protective tariff. They raised it again with the Smoot–Hawley Tariff Act of 1930 to meet the Great Depression in the United States. But that made the depression worse. This time it backfired, as Canada, Britain, Germany, France and other industrial countries retaliated with their own tariffs and special, bilateral trade deals. American imports and exports both went into a tailspin. The Democrats promised an end to protection on a reciprocal country-by-country basis (which they did), hoping this would expand foreign trade (which it did not). By 1936 the tariff issue had faded from politics, and the revenue it raised was small. In World War II, both tariffs and reciprocity were insignificant compared to trade channeled through Lend-Lease. Low rates dominated the debate for the rest of the 20th century. In 2017 Donald Trump promised to use protective tariffs as a weapon to restore greatness to the economy.

Tariffs and the Great Depression

The years 1920 to 1929 are generally misdescribed as years in which protectionism increased in Europe. In fact, from a general point of view, the crisis was preceded in Europe by trade liberalisation. The weighted average of tariffs remained tendentially the same as in the years preceding the First World War: 24.6% in 1913, as against 24.9% in 1927. In 1928 and 1929, tariffs were lowered in almost all developed countries. In addition, the Smoot-Hawley Tariff Act was signed by Hoover on June 17, 1930, while the Wall Street crash took place in the fall of 1929. Most of the trade contraction occurred between January 1930 and July 1932, before most protectionist measures were introduced (except for the limited measures applied by the United States in the summer of 1930). In the view of Maurice Allais, it was therefore the collapse of international liquidity that caused the contraction of trade, not customs tariffs.

Milton Friedman also held the opinion that the Smoot–Hawley tariff of 1930 did not cause the Great Depression. Douglas A. Irwin writes : "most economists, both liberal and conservative, doubt that Smoot Hawley played much of a role in the subsequent contraction."

Peter Temin, explains a tariff is an expansionary policy, like a devaluation as it diverts demand from foreign to home producers. He notes that exports were 7 percent of GNP in 1929, they fell by 1.5 percent of 1929 GNP in the next two years and the fall was offset by the increase in domestic demand from tariff. He concludes that contrary the popular argument, contractionary effect of the tariff was small. (Temin, P. 1989. Lessons from the Great Depression, MIT Press, Cambridge, Mass)

William J. Bernstein wrote:

Between 1929 and 1932, real GDP fell 17 percent worldwide, and by 26 percent in the United States, but most economic historians now believe that only a minuscule part of that huge loss of both world GDP and the United States’ GDP can be ascribed to the tariff wars. .. At the time of Smoot-Hawley's passage, trade volume accounted for only about 9 percent of world economic output. Had all international trade been eliminated, and had no domestic use for the previously exported goods been found, world GDP would have fallen by the same amount — 9 percent. Between 1930 and 1933, worldwide trade volume fell off by one-third to one-half. Depending on how the falloff is measured, this computes to 3 to 5 percent of world GDP, and these losses were partially made up by more expensive domestic goods. Thus, the damage done could not possibly have exceeded 1 or 2 percent of world GDP — nowhere near the 17 percent falloff seen during the Great Depression... The inescapable conclusion: contrary to public perception, Smoot-Hawley did not cause, or even significantly deepen, the Great Depression.

Paul Krugman writes that protectionism does not lead to recessions. According to him, the decrease in imports (which can be obtained by the introduction of tariffs) has an expansionary effect, i.e. favourable to growth. Thus in a trade war, since exports and imports will decrease equally, for the whole world, the negative effect of a decrease in exports will be compensated by the expansionary effect of a decrease in imports. A trade war therefore does not cause a recession. Furthermore, he notes that the Smoot-Hawley tariff did not cause the Great Depression. The decline in trade between 1929 and 1933 "was almost entirely a consequence of the Depression, not a cause. Trade barriers were a response to the Depression, in part a consequence of deflation."

Trade liberalization

Tariffs up to the Smoot–Hawley Tariff Act of 1930, were set by Congress after many months of testimony and negotiations. In 1934, the U.S. Congress, in a rare delegation of authority, passed the Reciprocal Tariff Act of 1934, which authorized the executive branch to negotiate bilateral tariff reduction agreements with other countries. The prevailing view then was that trade liberalization may help stimulate economic growth. However, no one country was willing to liberalize unilaterally. Between 1934 and 1945, the executive branch negotiated over 32 bilateral trade liberalization agreements with other countries. The belief that low tariffs led to a more prosperous country are now the predominant belief with some exceptions. Multilateralism is embodied in the seven tariff reduction rounds that occurred between 1948 and 1994. In each of these "rounds", all General Agreement on Tariffs and Trade (GATT) members came together to negotiate mutually agreeable trade liberalization packages and reciprocal tariff rates. In the Uruguay round in 1994, the World Trade Organization (WTO) was established to help establish uniform tariff rates.

Currently only about 30% of all import goods are subject to tariffs in the United States, the rest are on the free list. The "average" tariffs now charged by the United States are at a historic low. The list of negotiated tariffs are listed on the Harmonized Tariff Schedule as put out by the United States International Trade Commission.

Post World War II

After the war the U.S. promoted the General Agreement on Tariffs and Trade (GATT) established in 1947, to minimize tariffs and other restrictions, and to liberalize trade among all capitalist countries. In 1995 GATT became the World Trade Organization (WTO); with the collapse of Communism its open markets/low tariff ideology became dominant worldwide in the 1990s.

American industry and labor prospered after World War II, but hard times set in after 1970. For the first time there was stiff competition from low-cost producers around the globe. Many rust belt industries faded or collapsed, especially the manufacture of steel, TV sets, shoes, toys, textiles and clothing. Toyota and Nissan threatened the giant domestic auto industry. In the late 1970s Detroit and the auto workers union combined to fight for protection. They obtained not high tariffs, but a voluntary restriction of imports from the Japanese government. Quotas were two-country diplomatic agreements that had the same protective effect as high tariffs, but did not invite retaliation from third countries. By limiting the number of Japanese automobiles that could be imported, quotas inadvertently helped Japanese companies push into larger, and more expensive market segments. The Japanese producers, limited by the number of cars they could export to America, opted to increase the value of their exports to maintain revenue growth. This action threatened the American producers' historical hold on the mid- and large-size car markets.

The Chicken tax was a 1964 response by President Lyndon B. Johnson to tariffs placed by Germany (then West Germany) on importation of US chicken. Beginning in 1962, during the President Kennedy administration, the US accused Europe of unfairly restricting imports of American poultry at the request of West German chicken farmers. Diplomacy failed, and in January 1964, two months after taking office, President Johnson retaliated by imposing a 25 percent tax on all imported light trucks. This directly affected the German built Volkswagen vans. Officially it was explained that the light trucks tax would offset the dollar amount of imports of Volkswagen vans from West Germany with the lost American sales of chickens to Europe. But audio tapes from the Johnson White House reveal that in January 1964, President Johnson was attempting to convince United Auto Workers's president Walter Reuther, not to initiate a strike just prior the 1964 election and to support the president's civil rights platform. Reuther in turn wanted Johnson to respond to Volkswagen's increased shipments to the United States.

1980s to present

China gained entry to the WTO as Most favoured nation in early 2000s.

During the Reagan and George H. W. Bush administrations Republicans abandoned protectionist policies, and came out against quotas and in favor of the GATT/WTO policy of minimal economic barriers to global trade. Free trade with Canada came about as a result of the Canada–U.S. Free Trade Agreement of 1987, which led in 1994 to the North American Free Trade Agreement (NAFTA). It was based on Reagan's plan to enlarge the scope of the market for American firms to include Canada and Mexico. President Bill Clinton, with strong Republican support in 1993, pushed NAFTA through Congress over the vehement objection of labor unions.

Likewise, in 2000 Clinton worked with Republicans to give China entry into WTO and "most favored nation" trading status (i.e., the same low tariffs promised to any other WTO member). NAFTA and WTO advocates promoted an optimistic vision of the future, with prosperity to be based on intellectuals skills and managerial know-how more than on routine hand labor. They promised that free trade meant lower prices for consumers. Opposition to liberalized trade came increasingly from labor unions, who argued that this system also meant lower wages and fewer jobs for American workers who could not compete against wages of less than a dollar an hour. The shrinking size and diminished political clout of these unions repeatedly left them on the losing side.

Despite overall decreases in international tariffs, some tariffs have been more resistant to change. For example, due partially to tariff pressure from the European Common Agricultural Policy, US agricultural subsidies have seen little decrease over the past few decades, even in the face of recent pressure from the WTO during the latest Doha talks.

On March 5, 2002, President George W. Bush placed tariffs on imported steel.

Deindustrialization

According to the Economic Policy Institute, free trade has created a large trade deficit in the United States for decades, leading to the closure of many factories and cost the United States millions of jobs in the manufacturing sector. Trade deficits replaces well-paying manufacturing jobs with low-wage service jobs. Moreover, trade deficits lead to significant wage losses, not only for workers in the manufacturing sector, but also for all workers throughout the economy who do not have a university degree. For example, in 2011, 100 million full-time, full-year workers without a university degree suffered an average loss of $1,800 on their annual salary.

Indeed, these workers who have lost their jobs in the manufacturing sector and who have to accept a reduction in their wages to find work in other sectors, are creating competition that reduces the wages of workers already employed in these other sectors. In addition, the threat of relocation of production facilities leads workers to accept wage cuts to keep their jobs.

According to the EPI, trade agreements have not reduced trade deficits but rather increased them. The growing trade deficit with China comes from China's manipulation of its currency, dumping policies, subsidies, trade barriers that give it a very important advantage in international trade. In addition, industrial jobs lost by imports from China are significantly better paid than jobs created by exports to China. So even if imports were equal to exports, workers would still lose out on their wages.

The manufacturing sector is a sector with very high productivity growth, which promotes high wages and good benefits for its workers. Indeed, this sector accounts for more than two thirds of private sector research and development and employs more than twice as many scientists and engineers as the rest of the economy. The manufacturing sector therefore provides a very important stimulus to overall economic growth. Manufacturing is also associated with well-paid service jobs such as accounting, business management, research and development and legal services. Deindustrialisation is therefore also leading to a significant loss of these service jobs. Deindustrialization thus means the disappearance of a very important driver of economic growth.

Smuggling and Coast Guard

Historically, high tariffs have led to high rates of smuggling. The United States Revenue Cutter Service was established by Secretary Hamilton in 1790 as an armed maritime law and custom enforcement service. Today it remains the primary maritime law enforcement force in the United States.

The U.S. Customs and Border Protection (CBP) is a federal law enforcement agency of the United States Department of Homeland Security charged with regulating and facilitating international trade, collecting customs (import duties or tariffs approved by the U.S. Congress), and enforcing U.S. regulations, including trade, customs and immigration. They man most border crossing stations and ports. When shipments of goods arrive at a border crossing or port, customs officers inspect the contents and charge a tax according to the tariff formula for that product. Usually the goods cannot continue on their way until the custom duty is paid. Custom duties are one of the easiest taxes to collect, and the cost of collection is small.

Tariffs and historical American politicians

In 1896, the GOP platform pledged to "renew and emphasize our allegiance to the policy of protection, as the bulwark of American industrial independence, and the foundation of development and prosperity. This true American policy taxes foreign products and encourages home industry. It puts the burden of revenue on foreign goods; it secures the American market for the American producer. It upholds the American standard of wages for the American workingman."

George Washington

"I use no porter or cheese in my family, but such as is made in America," the inaugural President George Washington wrote, boasting that these domestic products are "of an excellent quality." One of the first acts of Congress Washington signed was a tariff among whose stated purpose was "the encouragement and protection of manufactures." In his 1790 State of the Union Address, Washington justified his tariff policy for national security reasons:

A free people ought not only to be armed, but disciplined; to which end a uniform and well-digested plan is requisite; and their safety and interest require that they should promote such manufactories as tend to render them independent of others for essential, particularly military, supplies

Thomas Jefferson

As President Thomas Jefferson wrote in explaining why his views had evolved to favor more protectionist policies: "In so complicated a science as political economy, no one axiom can be laid down as wise and expedient for all times and circumstances, and for their contraries."

After the War of 1812, Jefferson's position began to resemble that of Washington, some level of protection was necessary to secure the nation's political independence. He said:

experience has taught me that manufactures are now as necessary to our independence as to our comfort: and if those who quote me as of a different opinion will keep pace with me in purchasing nothing foreign where an equivalent of domestic fabric can be obtained, without regard to difference of price

Henry Clay

In 1832, then the United States Senator from Kentucky, Henry Clay said about his disdain for "free traders" that "it is not free trade that they are recommending to our acceptance. It is in effect, the British colonial system that we are invited to adopt; and, if their policy prevail, it will lead substantially to the re-colonization of these States, under the commercial dominion of Great Britain." Clay said:

When gentlemen have succeeded in their design of an immediate or gradual destruction of the American System, what is their substitute? Free trade! Free trade! The call for free trade is as unavailing as the cry of a spoiled child, in its nurse's arms, for the moon, or the stars that glitter in the firmament of heaven. It never has existed; it never will exist. Trade implies, at least two parties. To be free, it should be fair, equal and reciprocal.

Clay explained that "equal and reciprocal" free trade "never has existed; [and] it never will exist." He warned against practicing "romantic trade philanthropy… which invokes us to continue to purchase the produce of foreign industry, without regard to the state or prosperity of our own." Clay that he was "utterly and irreconcilably opposed" to trade which would "throw wide open our ports to foreign productions" without reciprocation.

James Monroe

In 1822, President James Monroe observed that "whatever may be the abstract doctrine in favor of unrestricted commerce," the conditions necessary for its success—reciprocity and international peace—"has never occurred and can not be expected." Monroe said, "strong reasons… impose on us the obligation to cherish and sustain our manufactures."

Abraham Lincoln

President Abraham Lincoln declared, "Give us a protective tariff and we will have the greatest nation on earth." Lincoln warned that "the abandonment of the protective policy by the American Government… must produce want and ruin among our people."

Lincoln similarly said that, "if a duty amount to full protection be levied upon an article" that could be produced domestically, "at no distant day, in consequence of such duty," the domestic article "will be sold to our people cheaper than before."

Additionally, Lincoln argued that based on economies of scale, any temporary increase in costs resulting from a tariff would eventually decrease as the domestic manufacturer produced more. Lincoln did not see a tariff as a tax on low-income Americans because it would only burden the consumer according to the amount the consumer consumed. By the tariff system, the whole revenue is paid by the consumers of foreign goods... the burthen of revenue falls almost entirely on the wealthy and luxurious few, while the substantial and laboring many who live at home, and upon home products, go entirely free.

Lincoln argued that a tariff system was less intrusive than domestic taxation: The tariff is the cheaper system, because the duties, being collected in large parcels at a few commercial points, will require comparatively few officers in their collection; while by the direct tax system, the land must be literally covered with assessors and collectors, going forth like swarms of Egyptian locusts, devouring every blade of grass and other green thing.

William McKinley

President William McKinley stated the United States' stance under the Republican Party as:

Under free trade the trader is the master and the producer the slave. Protection is but the law of nature, the law of self-preservation, of self-development, of securing the highest and best destiny of the race of man. [It is said] that protection is immoral.... Why, if protection builds up and elevates 63,000,000 [the U.S. population] of people, the influence of those 63,000,000 of people elevates the rest of the world. We cannot take a step in the pathway of progress without benefiting mankind everywhere

[Free trade] destroys the dignity and independence of American labor... It will take away from the people of this country who work for a living—and the majority of them live by the sweat of their faces—it will take from them heart and home and hope. It will be self-destruction.

He also categorically rejected the "cheaper is better" argument:

They [free traders] say, 'Buy where you can buy the cheapest.' That is one of their maxims… Of course, that applies to labor as to everything else. Let me give you a maxim that is a thousand times better than that, and it is the protection maxim: 'Buy where you can pay the easiest.' And that spot of earth is where labor wins its highest rewards.

They say, if you had not the Protective Tariff things would be a little cheaper. Well, whether a thing is cheap or whether it is dear depends on what we can earn by our daily labor. Free trade cheapens the product by cheapening the producer. Protection cheapens the product by elevating the producer.

The protective tariff policy of the Republicans... has made the lives of the masses of our countrymen sweeter and brighter, and has entered the homes of America carrying comfort and cheer and courage. It gives a premium to human energy, and awakens the noblest aspiration in the breasts of men. Our own experience shows that it is the best for our citizenship and our civilization and that it opens up a higher and better destiny for our people.

Theodore Roosevelt

President Theodore Roosevelt believed that America's economic growth was due to the protective tariffs, which helped her industrialize. He acknowledged this in his State of the Union address from 1902:

The country has acquiesced in the wisdom of the protective-tariff principle. It is exceedingly undesirable that this system should be destroyed or that there should be violent and radical changes therein. Our past experience shows that great prosperity in this country has always come under a protective tariff.

Donald Trump

The Trump tariffs were imposed by executive order (not by act of Congress) during the presidency of Donald Trump as part of his economic policy. In January 2018, Trump imposed tariffs on solar panels and washing machines of 30 to 50 percent. He soon imposed tariffs on steel (25%) and aluminum (10%) from most countries. On June 1, 2018, this was extended on the European Union, Canada, and Mexico. Separately, on May 10, the Trump administration set a tariff of 25% on 818 categories of goods imported from China worth $50 billion. The only country which remained exempt from the steel and aluminum tariffs was Australia. Argentinian and Brazilian aluminium tariffs were started on December 2, 2019 in reaction to currency manipulation.

Right to property

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Right_to_property The right to property , or the right to own property ...