The speech on tariffs from President Ronald Reagan that the Ontario government used in a $75 million ad blitz omitted a key section that calls into question the thrust of the message.

U.S. President Donald Trump says all trade negotiations with Canada are terminated over an anti-tariff ad using a clip of former U.S. president Ronald Reagan.

The ad was to begin airing in the United States this week on Newsmax and Bloomberg, the Ontario government said, and then on several other U.S. channels over the course of the following two weeks.