Trump Invokes a Dormant 1930 Law to Hit Canada With 50% Tariffs on Autos, Alcohol and Dairy
- ▸President Trump used Section 338 of the Tariff Act of 1930 — a Depression-era authority never before invoked to impose tariffs — to place an additional 50% duty on Canadian motor vehicles, alcoholic beverages and dairy products on July 20, 2026, covering close to $20 billion in imports.
- ▸U.S. Trade Representative Jamieson Greer's office said the action responds to Canada removing U.S. alcohol from store shelves, giving European Union dairy exporters better access to the Canadian market than U.S. suppliers, and capping U.S. vehicle exports to Canada from companies reshoring production to America.
- ▸The new duties take effect 30 days after the proclamations, on August 19, 2026 — the same week Washington's separate Section 122 global tariff expired and new Section 301 tariffs on 60 economies over forced-labor enforcement took hold.
On July 20, 2026, President Trump reached for a tariff law that has sat unused since the 1930s. Using Section 338 of the Tariff Act of 1930 — the same law passed alongside the notorious Smoot-Hawley tariffs — he ordered an additional 50% duty on Canadian-made cars, alcoholic drinks, and dairy products. Together the three proclamations cover close to $20 billion worth of Canadian goods sold into the US each year.
The Office of the US Trade Representative frames the move as retaliation, not just protection. Ambassador Jamieson Greer's office argues Canada broke the spirit of fair trade by pulling American liquor and wine off store shelves, letting European dairy producers get better access to the Canadian market than American ones, and putting a cap on how many vehicles US-based automakers — especially those that moved production back to the States — can sell into Canada.
The tariffs don't bite immediately: they take effect on August 19, 2026, thirty days after the announcement. The timing matters. This is one of three major US tariff actions inside a single week, landing right as an older, broader 10% global tariff expired by law and a separate round of tariffs tied to forced-labor enforcement took effect on dozens of countries. For Canada specifically, it signals Washington is willing to escalate trade tension bilaterally, on top of the tariffs it is applying worldwide.
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Cite This Article
EconoLens Editorial Team. (2026, August 4). Trump Invokes a Dormant 1930 Law to Hit Canada With 50% Tariffs on Autos, Alcohol and Dairy. EconoLens. https://econolens.co.in/news/us-section-338-tariffs-canada-2026
The EconoLens editorial team covers global macroeconomics, monetary policy, fiscal policy, and international trade. All content is AI-assisted and fact-checked.