His warning follows signals from Prime Minister Mark Carney that the two sides may not be able to reach an agreement by a self-imposed deadline of Aug. 1

Trump’s tariffs on Canadian steel and aluminum, autos and goods not covered by the U.S.-Mexico-Canada trade agreement have upended the status quo. He has threatened to raise some of those tariffs to 35 percent by Aug. 1. Canada sends more than 75 percent of its exports to the U.S.

For the hundreds of Canadian steelworkers who lost their jobs this year amid President Donald Trump’s trade war, talk of reaching a trade deal between Canada and the U.S. is coming too little, too late.