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.

President Donald Trump has slammed Canadian imports with a 35 percent tariff hike, accusing Canada of failing to curb the flow of fentanyl into the United States. The move, issued by executive order on Thursday night,