American System (economic plan)

The American System was an economic plan that played a prominent role in American policy during the first half of the 19th century. Rooted in the "American School" ideas of Alexander Hamilton, the plan "consisted of three mutually reinforcing parts: a tariff to protect and promote American industry; a national bank to foster commerce; and federal subsidies for roads, canals, and other 'internal improvements' to develop profitable markets for agriculture".Congressman Henry Clay was the plan's foremost proponent and the first to refer to it as the "American System".

A plan to strengthen and unify the nation, the American System, was advanced by the Whig Party and a number of leading politicians including Henry Clay, John C. Calhoun and John Quincy Adams. The System ran counter to federalism and included:

Clay argued that the West, which opposed the tariff, should support it since urban factory workers would be consumers of western foods. In Clay’s view, the South (which also opposed high tariffs) should support them because of the ready market for cotton in northern mills. This last argument was the weak link. The South never strongly supported the American System and had access to plenty of markets for its cotton exports.

Portions of the American System were enacted by the United States Congress. The Second Bank of the United States was rechartered in 1816 for 20 years. High tariffs were first suggested by Alexander Hamilton in his 1791 Report on Manufactures but were not approved by Congress until the Tariff of 1816. Tariffs were subsequently raised until they peaked in 1828 after the so-called Tariff of Abominations. After the Nullification Crisis in 1833, tariffs remained the same rate until the Civil War. However, the national system of internal improvements was never adequately funded; the failure to do so was due in part to sectional jealousies and constitutional squabbles about such expenditures.

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