US President Donald Trump has said he is immediately ending all trade negotiations with Canada.
In a post on Truth Social, Trump wrote that the country had run an advert featuring former US President Ronald Reagan speaking negatively about tariffs.
Based on their egregious behavior, ALL TRADE NEGOTIATIONS WITH CANADA ARE HEREBY TERMINATED, Trump wrote late on Thursday.
The US president has imposed a 35% levy on Canadian imports, although he has allowed exemptions for goods that fall under the USMCA - a free trade agreement with Mexico and Canada that Trump negotiated during his first term.
Trump stated the video, sponsored by the Ontario government, was designed to interfere with the US Supreme Court, which is set to make a decision on whether Washington's sweeping global tariffs are legal.
The court's decision represents a huge test for Trump's presidential authority and economic policy, which could lead to the US refunding billions collected in tariffs.
In the minute-long advert, Reagan's voice narrates over imagery of the New York Stock Exchange and cranes with US and Canadian flags.
Part of a 1987 national radio address, Reagan criticized high tariffs and warned that they could trigger trade wars, hurting American consumers in the long run.
The Ronald Reagan Foundation expressed dissatisfaction with the use of Reagan's remarks, claiming that the Ontario government did not seek permission and misrepresented his address.
Ontario Premier Doug Ford has been an ardent opponent of Trump's tariffs, emphasizing that the province will continue to advocate against them. The advert was part of a $75 million campaign on mainstream US television to dispute the tariffs.
Trump's recent imposition of tariffs has significantly impacted Canadian industries, especially within the automotive and steel sectors, contributing to losses and economic strain in Ontario and beyond.
