TORONTO - Premiers remain at odds over how best to respond to U.S. tariffs, a day after Prime Minister Mark Carney left a meeting in Washington without announcing any breakthroughs on a deal.

Speaking at a conference in Toronto hosted by BMO and Eurasia Group, Ontario Premier Doug Ford said he remains prepared to cut off shipments of energy, minerals and other exports if the U.S. doesn't relent on tariffs.

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