Canada’s Retaliatory Tariffs Set to Take Effect as Trump Threatens to Escalate

Canada’s Retaliatory Tariffs Set to Take Effect as Trump Threatens to Escalate - The New York Times

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Brushing Aside Trump’s Threats, Canada Retaliates on Tariffs

New Canadian levies of up to 50 percent are expected to begin Tuesday, even as Washington warns of a new round of American tariffs.

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!An aerial view of a two-way bridge crossing a river. Several trucks cross the bridge.

*The Blue Water Bridge, connecting Sarnia, Ontario, and Port Huron, Mich., this month.

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By

Ian Austen

Reporting from Ottawa

Published Sept. 7, 2026

Updated Sept. 8, 2026, 9:12 a.m. ET

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With an insulted and angry nation solidly behind him, Prime Minister Mark Carney of Canada is charging ahead in a bitter trade war with the United States started by President Trump, risking a further fraying of what once was one of the world’s closest alliances.

Retaliatory tariffs, which took effect at 12:01 a.m. Eastern time on Tuesday, demonstrate Mr. Carney’s defiance toward increasing bombast by Mr. Trump, who has been trying to humiliate Canada economically after more than two weeks of finger pointing and threats.

Mr. Carney’s response has distinguished him as one of the few world leaders standing up to Mr. Trump as he lashes out at American allies on a range of issues.

The new measures will double the rate of existing tariffs that Canadian businesses pay on imported American steel and aluminum products and affect about 700 products, including aluminum foil, railway locomotives and steel bridges.

Polls show that Canadians strongly back Mr. Carney’s decision to end trade talks with Washington last month and hit back with tariffs on about $20 billion in American products entering Canada. But there is also concern over what might happen next. Mr. Trump has repeatedly threatened another round of American tariffs if Canada follows through on its plan.

Some in Canadian industry say they are inclined to take Mr. Trump at his word, at least on this threat.

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