Trade Expansion Act

The Trade Expansion Act of 1962 is an American trade law that granted the president authority to negotiate tariff reductions of up to 80%. Section 232 of the act allows the president to impose tariffs on imports that threaten national security. The section was used in 1979 and 1982, but had not been invoked since 1995 until President Trump cited it in 2018 to impose tariffs on steel and aluminum. In 2018, Trump also ordered an investigation into imports of automobiles and automotive parts under Section 232, which concluded that these imports posed a threat to US national security, justifying the imposition of tariffs of up to 25%.learn more on wikipedia