Trump has justified tariffs on goods from Canada, the top U.S. export market, by accusing it of failing to stop the cross-border flow of fentanyl, even though U.S. government data shows Canada accounts for only 1% of the fentanyl that enters the United States.

A proposed U.S.-Canada trade deal could still be weeks away, Ottawa's chief negotiator said on Friday, a day after U.S. President Donald Trump imposed higher tariffs on imports from Canada. Trump - who had set an August 1 deadline for an agreement - signed an executive order increasing tariffs on Canadian goods to 35% from 25% on all products not covered by the U.