The United States has justified its most recent trade action on the basis of the cross-border flow of fentanyl, despite the fact that Canada accounts for only 1% of U.S. fentanyl imports and has been working intensively to further reduce these volumes.

Canadian Prime Minister Mark Carney said early Friday he is “disappointed” by President Trump’s decision to increase tariffs on his country to 35 percent but left open the door for a potential trade deal.

The Canadian team working on a trade deal with the United States could walk away from talks in the wake of a U.S. decision to impose a 35% tariff on some goods from Canada, an adviser to Prime Minister Mark Carney said on Friday.