US imposes 50% tariffs on Canadian goods as trade talks collapse into open trade war

The United States imposed 50% tariffs on approximately US$20 billion worth of Canadian goods after trade negotiations broke down, with Canada's Prime Minister Mark Carney vowing a 'dollar for dollar' retaliatory response. Trade experts warned of potential job losses, but said the largest impact would be political, further straining the relationship between the two traditional allies. The dispute underscores the fragility of even longstanding trade partnerships in the current geopolitical climate.