US-Canada Trade War: 50% Tariffs Trigger Canadian Retaliation

The United States imposed 50% tariffs on Canadian goods worth $20 billion following failed negotiations, prompting Canada to announce dollar-for-dollar countermeasures starting September 8. Prime Minister Mark Carney called the situation a "war" and accused Washington of using economic integration as a weapon. The tariffs, effective over the weekend, affect approximately 5% of Canada's annual exports, including hockey sticks, medical tools, food, cosmetics, and clothing. Canada's retaliation targets American steel, dairy, appliances, agricultural equipment, and electronics. US Trade Representative Jamieson Greer claimed Canada rejected a favorable deal, while Ontario Premier Doug Ford threatened to cut electricity and critical minerals. Washington invoked the rarely-used 1930 Smoot-Hawley Tariff Act provision allowing 50% tariffs on countries discriminating against US businesses. The dispute threatens the USMCA trade agreement and could raise consumer prices, reigniting inflation. Bilateral trade between the neighbors totals $880 billion annually.