The latest Canadian tariffs on $20 billion of U.S. exports went into effect Tuesday. A handful of U.S. states are likely to feel a big effect.

A Canadian province made clear that Donald Trump’s threats mean nothing to it. David Eby, premier of British Columbia, unveiled new signs Tuesday that will be displayed at border crossings in the Pacific Northwest and emphasize that the province will always be part of Canada.

One expert warns Trump's "very dangerous and very disruptive policies toward Canadians" spark uncertainty north of the border.

Republican Kansas Senator Jerry Moran fired back at Trump, writing on X that he had contacted the Trump administration directly to highlight the company’s contribution to the state’s aerospace and defense industries.

Canada tariffs could disrupt Oklahoma's largest trading relationship, affecting refineries, HVAC plants and agricultural input costs, experts say.

Canada's new retaliatory tariffs against the U.S. are in effect as of Tuesday, Sept. 8. Canadian leaders are warning their residents that the move will come at a cost, but the alternative would be worse.

Collins has long publicly criticized tariffs on Canada, speaking on the Senate floor about the close economic relationship between Maine and Canada ahead of a symbolic vote against earlier tariffs last year. She and other Maine Republicans were quick to publicly push back on Trump ’s decision to impose 50 percent tariffs on Canada in July.