Protectionism in the United States is protectionist economic policy that erected tariff and other barriers to trade with other nations. This policy was most prevalent in the 19th century. It attempted to restrain imports to protect Northern industries. It was opposed by Southern states that wanted free trade to expand cotton and other agricultural exports. Protectionist measures included tariffs and quotas on imported goods, along with subsidies and other means, to ensure fair competition between imported goods and local goods. In today's age the US is still highly protectionist, according to Global Trade Alert the US has adopted over 1000 protectionist measures since the Global Economic Crisis in 2008, more than any other country since.
According to Michael Lind, protectionism was America's de facto policy from the passage of the Tariff of 1816 to World War II, "switching to free trade only in 1945, when most of its industrial competitors had been wiped out" by the war.. It has been argued that one of the underlying motivations for the American Revolution itself was a desire to industrialize, and reverse the trade deficit with Britain, which had grown by a factor of ten in the space of a few decades, from £67,000 (1721–30) to £739,000 (1761–70).
According to Paul Bairoch, since the end of the 18th century, the United States has been "the homeland and bastion of modern protectionism". In fact, the United States never adhered to free trade until 1945. A very protectionist policy was adopted as soon as the presidency of George Washington by Alexander Hamilton, Secretary of the Treasury from 1789 to 1795 and author of the text "Report on the Manufactures, 1792 "which called for customs barriers to allow American industrial development. This text was one of the references of the German economist Friedrich List (1789–1846). This policy remained throughout the 19th century and the overall level of tariffs was very high (close to 50% in 1830). The victory of the protectionist North states against the free trade states of the South at the end of the Civil War (1861–1865) perpetuated this trend, even during periods of free trade in Europe (1860–1880).