The U.S. imposed 50% tariffs on Canadian imports, valued in the billions, after trade talks failed to avert a 12:01 a.m. ET Saturday deadline.

U.S.-Canada trade negotiations collapsed, leading to 50% tariffs on Canadian goods including cement, dairy, and hockey sticks. The dispute centered partly on tariffs for medium- and heavy-duty vehicles, impacting automakers like General Motors and Ford. This disrupts deeply integrated supply chains, particularly in automotive, machinery, and energy, with cross-border freight totaling $67.9 billion in June.