Trump’s Attack on Ontario’s Reagan Ad Helped Amplify Its Reach BloombergWhy did Donald Trump really scrap trade talks with Canada? CBCTrump says a Canadian ad misstated Ronald Reagan’s views on tariffs. Here are the facts and context AP NewsDonald Trump made several angry claims about Ontario’s anti-tariff ad. We fact checked what was said Toronto StarVarcoe: ‘Too many chefs in the kitchen’: Alberta business leader hopes for calmer heads in latest U.S.-Canada trade spat Calgary Herald