President Trump has announced 50% tariffs on most Canadian goods, escalating a trade dispute between the two countries. The White House said the move was a response to what it called unfair discrimination against American products, particularly in the automotive, alcohol and dairy sectors, and follows Canada's own retaliatory tariffs imposed after earlier US trade actions. The decision threatens to disrupt trade relations between two of the world's most integrated economies and has raised concerns about higher consumer prices and broader economic instability.

Trump signed three proclamations under Section 338 of the 1930 Trade Act, with the tariffs due to take effect in 30 days; energy products, potash, fish and critical minerals are excluded, though goods previously shielded under the USMCA trade agreement are not. Canadian Prime Minister Mark Carney said his country remained "prepared to negotiate" but warned the dispute was costly for families, while Ontario Premier Doug Ford called for reciprocal retaliation, "tariff for tariff, dollar for dollar." Business groups have urged a negotiated settlement within the 30-day window, and some Democrats and economic analysts warned that invoking Depression-era trade law could raise inflation and unsettle global markets.