U.S. President Donald Trump says he is terminating trade negotiations with Canada following new anti-tariff ads from the Ontario government that features the voice of former U.S. president Ronald Reagan.

“The Ronald Reagan Foundation has just announced that Canada has fraudulently used an advertisement, which is FAKE, featuring Ronald Reagan speaking negatively about Tariffs,” Trump wrote in a post to Truth Social late Thursday.

“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.”

In a post to X on Thursday, The Ronald Reagan Foundation said the ad “misrepresents” a radio address from April 1987 and “the government of Ontario did not seek nor receive permission to use and edit the remarks.”

After the ad caught the attention of Trump earlier this week, Ontario Premier Doug Ford defended the move, saying the aim is to “blast” the message to Americans, particularly Republican districts where Trump draws his support.

The ad features a clip of Reagan — a beloved Republican icon — slamming tariffs on foreign goods and saying they lead to trade wars and job losses.

The ad, which Ford previously said cost $75 million, has been running on most major U.S. networks.

Prime Minister Mark Carney and his cabinet have been in ongoing discussions with Trump and his administration for months, as the trade war between the two countries drags on.

Throughout the negotiations, Carney has signalled it’s highly unlikely any country will come away from talks with the United States with an entirely tariff-free deal. Instead, Canada is hoping to secure deals on specific sectors, including steel and aluminum.

Earlier this week, Carney did not dismiss the possibility for a new sectoral tariff deal with the United States, saying “we’ll see” when asked whether Canada can expect a deal on sectoral tariffs by this month’s APEC summit.

Speaking to reporters in Bowmanville, Ont. – alongside Ford – on Thursday, Carney spoke again about the Americans “moving to an approach which is sector by sector, as opposed to global.”

“In the situation we’re in right now with the United States, with the negotiations we’re having with the United States, we’re having very detailed, specific, constructive negotiations for the steel industry, the aluminum industry. There’s elements of the energy industry, a few other components in there,” Carney added.

Carney is set to head to Asia on Friday for both the ASEAN and APEC summits next week. Trump is also expected to attend APEC.

This is not the first time Trump abruptly ended negotiations with Canada in a social media post.

Back in June, Trump called off trade talks “effective immediately,” citing disagreement over Canada’s controversial digital services tax as the reason for shutting down negotiations.