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On July 20, 2026, President Donald Trump invoked a Great Depression-era trade statute to announce 50% tariffs on a wide array of Canadian exports. The sweeping orders rely on Section 338 of the Tariff Act of 1930 (“Section 338”, codified at 19 U.S. Code § 1338) and specifically target Canadian dairy, alcohol, and automobiles.
For Canadian importers, exporters, and customs professionals, the message is clear. Beyond retaliating against specific sector disputes, the U.S. administration is aggressively signaling that it wants major concessions on Canada's protectionist "Supply Management" framework for dairy products – and it may well have a point.
The Section 338 Proclamations