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President Trump during a meeting in the Oval Office on Tuesday, July 21, 2026. Photo: Aaron Schwartz/CNP/Bloomberg via Getty Images.
President Trump is invoking an unused provision of the 1930 Smoot-Hawley Tariff Act to impose additional tariffs on Canada over alleged discrimination against U.S. exports.
Why it matters: As the Supreme Court limits Trump's ability to wield tariffs and a temporary tariff stopgap expires, the president is turning to a rarely used tariff authority.
