(CNN) — President Donald Trump said on Thursday he was terminating trade talks with Canada, threatening once again to upend the crucial economic relationship between the United States and its second-biggest trading partner.

Trump said he canceled the talks in response to an advertisement released last week by the government of Canada’s Ontario province, which featured audio from a speech by former US President Ronald Reagan criticizing tariffs on foreign goods.

In the 1987 speech, Reagan lambasted tariffs as hurting “every American worker and consumer” and “triggering fierce trade wars.”

After the ad aired, the Ronald Reagan Foundation claimed it “misrepresents” the speech, and that the Ontario government had not asked permission to use the clip.

While the ad edited the speech and

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