President Donald Trump announced an additional 10% in tariffs on Canada in response to an advertisement by the province of Ontario that is critical of the levies, escalating tensions in one of the world’s biggest bilateral trade relationships. 
Trump’s Truth Social post follows days of public clashes over the ad, which invoked former President Ronald Reagan’s stance as a free trader and triggered the current US president’s ire, prompting him to suspend trade negotiations with Canada.
“Because of their serious misrepresentation of the facts, and hostile act, I am increasing the Tariff on Canada by 10% over and above ...