The ad was developed by Ontario’s provincial government. The goal of the ad, per Ontario Premier Doug Ford, was to reach as many Americans as possible. After a conversation with Canadian Prime Minister Mark Carney, Ford announced the decision to pull the ad, which will officially stop airing on Monday.

Trump threatened once again to turn the key economic relationship between the United States and its second-biggest trading partner topsy-turvy.

Trump slaps Canada with additional 10% tariff over a disputed Reagan ad that aired during World Series, calling it a "fraudulent misrepresentation" of the former president.

The Canadian PM said Trump’s protectionism and neglect of low-carbon growth risked weakening U.S. competitiveness and trade ties.

President Trump announced Saturday he would place a new 10 percent tariff on Canada after he accused Ontario Premier Doug Ford of launching a misleading ad featuring President Ronald Reagan discussing tariffs.

Yahoo Finance is chronicling the latest news and updates on President Trump's plans to impose tariffs on goods from other countries.