“The ad was for $75,000. They only did this to interfere with the decision of the US Supreme Court, and other courts,” Trump wrote.

“Based on their egregious behavior, ALL TRADE NEGOTIATIONS WITH CANADA ARE HEREBY TERMINATED,” Trump added.

The foundation also said that Ontario had not received its permission “to use and edit the remarks” of the late US president.

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

“I heard that the president heard our ad. I’m sure he wasn’t too happy,” Ford said on Tuesday.

It’s official: Ontario’s new advertising campaign in the U.S. has launched. 

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.

Watch our new ad. pic.twitter.com/SgIVC1cqMJ

— Doug Ford (@fordnation) October 16, 2025

Trump’s announcement on the end of trade talks also followed after Canadian Prime Minister Mark Carney said he aimed to double his country’s exports to countries outside the US because of the threat posed by the Trump administration’s tariffs.

Carney also told reporters that Canada would not allow unfair US access to its markets if talks on various trade deals with Washington fail.

Canada and the US have been in talks for weeks on a potential deal after Trump imposed tariffs on Canadian steel, aluminium and autos earlier this year, prompting Canada to respond in kind.

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