Trump administration consults unused 1930s law for tariff playbook

The Trump administration is testing a never-before-used Section 338 of the 1930 Smoot-Hawley Tariff Act, threatening 50% duties on Canadian goods. This follows claims of Canadian discrimination against U.S. autos, dairy and alcohol. The move makes tariff policy harder for businesses and investors to predict, even as Middle East conflict pushes up energy costs.