President Trump called off trade negotiations with Canada on Thursday after the government of Ontario, the most populous province in Canada, released an advertisement that featured remarks from former President Reagan that criticized tariffs.

The advertisement’s launch last week signalled the start of the Ontario government’s “new advertising campaign” in the U.S. against tariffs, which has been a centerpiece of Trump’s second term.

But the advertisement quickly came under fire for using spliced audio of Reagan’s remarks on tariffs, leading a nonprofit founded by the late former president to criticize the campaign.

Trump soon after called the advertisement “FAKE” in a Thursday post on X that callld off trade negotiations with Canada.

“Based on their egregious behavior, ALL TRADE NEGOTIATIONS WITH CANADA ARE HEREBY TERMINATED,” Trump wrote in his Thursday Truth Social post terminating trade with Canada.

The advertising campaign and the president’s anger come mere weeks before the Supreme Court is scheduled to review challenges to Trump’s tariffs. It also comes as the Toronto Blue Jays, Canada's only Major League Baseball team, prepares to host the first game of the World Series against the Los Angeles Dodgers.

Trump’s concerns over the advertisement appear to stem from its use of Reagan’s audio and potential to sway decisions in his tariff cases, which several lower courts previously struck down.

Here’s what to know about Trump’s anger over Ontario’s advertisement campaign, which reportedly cost around $75 million Canadian dollars or $54 million USD.

© The Hill