Canada Faces New, Unpredictable Trump Tools After Tariff Ruling

Canadian businesses can’t relax in light of the US Supreme Court decision striking down President Donald Trump’s emergency tariffs, experts said — the ruling simply moves his America First trade policy into a volatile new phase.

Trump’s response to the ruling raised the possibility that the tariff rate on some Canadian products could, in fact, go up.

Canada and Mexico were among Trump’s first tariff targets using the International Emergency Economic Powers Act a year ago. The high court ruled in a 6 to 3 decision that the president exceeded his authority.

Following the decision, Trump said he’ll sign ...