President Donald Trump answers questions from reporters during a roundtable on criminal cartels in the State Dining Room of the White House, Thursday, Oct. 23, 2025, in Washington. Photo by Evan Vucci /AP

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WASHINGTON (AP) — President Donald Trump said late Thursday that he was ending “all trade negotiations” with Canada because of a television ad opposing U.S. tariffs that he said misstated the facts and called “egregious behavior” aimed at influencing U.S. court decisions.

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The post on Trump’s social media site came after Canadian Prime Minister Mark Carney said he aims to double his country’s exports to countries outside the U.S. because of the threat posed by Trump’s tariffs.

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Trump posted, “The Ronald Reagan Foundation has just announced that Canada has fraudulently used an advertisement, which is FAKE, featuring Ronald Reagan speaking negatively about Tariffs.”

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“The ad was for $75,000. They only did this to interfere with the decision of the U.S. Supreme Court, and other courts,” Trump wrote on his social media site. “TARIFFS ARE VERY IMPORTANT TO THE NATIONAL SECURITY, AND ECONOMY, OF THE U.S.A. Based on their egregious behavior, ALL TRADE NEGOTIATIONS WITH CANADA ARE HEREBY TERMINATED.”

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Carney’s office didn’t immediately respond to a request for comment Thursday night.

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Earlier Thursday, the Ronald Reagan Presidential Foundation & Institute posted on X that the ad created by the government of Ontario “misrepresents the ‘Presidential Radio Address to the Nation on Free and Fair Trade’ dated April 25, 1987.” It added that Ontario did not receive foundation permission “to use and edit the remarks.”

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The foundation said it is “reviewing legal options in this matter” and invited the public to watch the unedited video of Reagan’s address.

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Carney met with Trump earlier this month to try to ease trade tensions as the two countries and Mexico prepare for a review of the U.S.-Mexico-Canada Agreement, a trade deal Trump negotiated in his first term, but has since soured on.

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More than three-quarters of Canadian exports go to the U.S., and nearly $3.6 billion Canadian (US$2.7 billion) worth of goods and services cross the border daily.

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In his own post on X last week, Doug Ford, the premier of Ontario, posted a link to the ad and the message: “It’s official: Ontario’s new advertising campaign in the U.S. has launched.”

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He continued, “Using every tool we have, we’ll never stop making the case against American tariffs on Canada. The way to prosperity is by working together.”

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