Topic summary
Section 232
Extracted from the Wikipedia article Trade Expansion Act.
Section 232 of the act permits the president to impose tariffs based on a recommendation by the U.S. secretary of commerce if "an article is being imported into the United States in such quantities or under such circumstances as to threaten or impair the national security." This section was used only in 1979 and 1982, and had not been invoked since the creation of the World Trade Organization in 1995, until President Trump cited it on March 8, 2018, to impose tariffs on steel and aluminum.