The U.S. and Canada have been going back and forth over tariffs since President Donald Trump 's return to the White House on January 20. Trump had threatened tariffs over what he said was a lack of action by Canada, Mexico and China over the flow of fentanyl into the country.

The government of Ontario is applying a 25 percent surcharge starting Monday on electricity exports to three U.S. states in response to U.S. tariffs on Canada. This surcharge will affect