Shares of General Motors Co. and Ford Motor Co. were selling off Tuesday, as president-elect Donald Trump’s new tariff threat fueled concerns that a “meaningful” number of auto sales will be lost. Late Monday,

Ontario Premier Doug Ford said Tuesday that U.S. president-elect Donald Trump's threat to slap a 25 per cent tariff on all Canadian goods is "like a family member stabbing you right in the heart."

Nearly every major automaker operating in the U.S. has factories in Mexico, however GM and Stellantis produce highly profitable full-size pickup trucks there.