Trump's tariffs strain US-Canada ties

President Trump's tariffs and threats have strained US-Canada relations, culminating in 50% tariffs on $20 billion of Canadian imports after failed negotiations. Canada's PM Mark Carney promised retaliatory measures. The dispute began with 25% tariffs in February 2025, paused and partially exempted, but escalated with steel, aluminum, and auto tariffs, prompting Canadian counter-tariffs.