The Nullification Crisis of 1832-1833 was a political confrontation between South Carolina and the federal government, particularly over tariffs. South Carolina, led by John C. Calhoun, declared that it had the right to nullify, or invalidate, any federal law it deemed unconstitutional. This crisis arose because South Carolina opposed the Tariffs of 1828 and 1832, which they believed favored Northern interests at the expense of the South's economy. In response, President Andrew Jackson asserted the supremacy of federal laws and prepared to use military force if necessary to enforce them. Eventually, a compromise was reached, leading to a gradual reduction of the tariffs.