Ford’s political style has at times made him a Canadian mirror image of Trump — earlier this year, he popularized a MAGA-style blue hat emblazoned with the words, “Canada Is Not For Sale.” Photo by Bryan Passifiume/Toronto Sun/Postmedia files

The premier of Canada’s most powerful province — and arguably the country’s most successful politician today — has gotten under Donald Trump’s skin again.

An anti-tariff ad launched by Ontario Premier Doug Ford’s government prompted Trump to lash out Thursday night, announcing all trade negotiations with Canada had been halted. The ad uses excerpts from a 1987 speech by former President Ronald Reagan, in which he defended free trade and criticized the idea tariffs lead to economic gains .

Trump’s eruption followed his more muted reactio

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