Economists are warning that Donald Trump's tariffs on Canada and Ottawa's counter-tariffs could cause higher prices for Canadians. How soon could that happen?

President Donald Trump took action Saturday to impose new tariffs on Canada, Mexico and China, which could have a sweeping impact on the American economy.

President Donald Trump on Saturday signed an order to impose stiff tariffs on imports from Mexico, Canada and China.

Hours after President Trump signed the order Saturday, Mexican President Claudia Sheinbaum ordered retaliatory tariffs. Here's what to know.