Canada chooses confrontation over concession in tariff dispute with U.S.

Canada broke off trade negotiations with the United States after Washington demanded restrictions on Canada's ability to strike trade deals with other countries, a condition Prime Minister Mark Carney called unacceptable and a question of sovereignty. The U.S. then imposed 50% tariffs on about $20 billion of Canadian goods, and Canada announced matching retaliation starting Sept. 8. Carney's stance is seen as a test of whether middle powers can resist economic coercion from larger nations.