The United States imposes 50% tariffs on about $20 billion of Canadian imports after trade negotiations break down, and Canada says it will respond “dollar for dollar.” Canadian Prime Minister Mark Carney pledges to match the measures to protect Canadian workers and businesses, as the tariffs take effect early Saturday.

Sources describe the talks between Washington and Ottawa as failing over several days, with Canada halting negotiations at the end of a short face-off and criticizing U.S. proposals as unfair and harmful. Multiple outlets report that the U.S. introduces the levies after a last-minute breakdown, and that the retaliation pledge is immediate rather than conditional on future talks. The articles generally align on the tariff rate, the broad value of affected goods, the timing of when the tariffs begin, and Carney’s commitment to equal reciprocal action, though they differ slightly in emphasis—some focus more on the negotiation collapse, others on the economic escalation once the tariffs start.