Chronology of Trump's Trade War with Canada; Washington's 50% Tariffs on Ottawa, the Latest Escalation

President Donald Trump's escalating tariff war with Canada has severely strained the long-standing relationship between the two nations. Trump's administration has repeatedly threatened Canada's economy and sovereignty with new import taxes, even suggesting Canada could become the "51st state" of the U.S. This rhetoric, coupled with waves of tariffs exchanged between the countries, has angered Canadians. Their government has responded with its own retaliatory measures, while businesses and consumers on both sides of the border face increasing uncertainty.

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Washington and China took reprisals, he accuses.

The most recent escalation saw Washington impose 50% tariffs on $20 billion of Canadian imports. These duties took effect after last-minute negotiations failed. Canadian Prime Minister Mark Carney quickly vowed to match the new import taxes. This move followed earlier threats from Trump to impose 25% tariffs on Canadian imports on his first day back in office.

Trump signed an executive order for 25% tariffs on imports from Canada, effective February 4, 2025. He invoked national emergency powers, citing undocumented migration and drug trafficking. Then-Prime Minister Justin Trudeau promised retaliatory duties. However, tensions temporarily cooled when the tariffs were postponed. Trump agreed to a 30-day pause, and more limited tariffs on Canadian imports began March 4.

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Canada will not yield to them.

Further complicating matters, the U.S. granted an exemption for auto manufacturers and postponed the 25% tariff on goods compliant with the USMCA trade pact. Meanwhile, Trump's global tariffs on steel and aluminum, set at 25%, did take effect. Canada retaliated with its own tariffs on $29.8 billion CAD ($20.7 billion) of U.S. imports.

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Canada will not yield to them.

Trump announced "reciprocal" tariffs on nearly all U.S. trading partners on April 2, 2025, but did not reveal additional levies on Canada. Legal challenges arose against these broad tariffs, which Trump imposed using emergency powers. The U.S. International Trade Court ruled in late May 2025 that Trump exceeded his authority, but a federal appeals court temporarily suspended the order. Sector-specific duties continued to accumulate globally. Trump's 25% tariffs on auto imports also took effect in April 2025, leading Carney to impose a matching 25% tariff on vehicles imported from the U.S. that did not meet USMCA standards. Trump's 50% tariffs on nearly all foreign steel and aluminum were implemented in June 2025, with Carney threatening similar measures.

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U.S. and Canada fail to reach an agreement to avoid new tariffs; 50% tariff on products advances.