Press Secretary Karoline Leavitt said the duties were in response to "illegal fentanyl" both countries "allowed to distribute" into the US.

Prime Minister Justin Trudeau said that Canada “won’t back down” from President Trump’s threat to impose a 25 percent tariff and that Ottawa will respond accordingly until they are removed.

Hydropower and pipelines cross the U.S.-Canada border. They’re critical to keeping the lights on and energy costs from going up.