The tense exchange happened after an anti-tariff commercial aired by Ontario infuriated the Trump administration.

Ontario Premier Doug Ford is standing by his decision to run an anti-tariff U.S. ad campaign after President Donald Trump ...

In the latest twist over an anti-tariff ad which has upset President Trump, the US ambassador to Canada suggests no trade ...

Ontario Premier Doug Ford has called on Pete Hoekstra, the U.S. ambassador to Canada, to apologize to Ontario’s ...

Ford, Canada’s most successful populist politician, has stolen the spotlight from Prime Minister Mark Carney as the country’s ...

An anti-tariff commercial run by Ontario's government has sparked renewed trade tensions between the United States and Canada.

Ontario's ad criticizing tariffs aired during the World Series, hours after President Donald Trump said he'd slap new tariffs ...

Doug Ford has built a reputation for picking fights with President Trump and getting under his skin with publicity-grabbing ...