What Is Section 338? The Tool Trump Is Using to Threaten Canada With 50% Tariffs

US President Donald Trump is employing Section 338 of the Tariff Act of 1930 to impose potential 50% tariffs on Canadian goods, following the Supreme Court's rejection of his use of emergency powers for trade policy. This section, rarely used since its creation during the Great Depression, targets specific imports in response to perceived unfair trade practices by Canada, particularly in dairy, alcohol, and automotive sectors. This move underscores the ongoing tensions in US-Canada trade relations and highlights the complexities and historical roots of trade legislation in resolving modern trade disputes.