Trump's trade war and his talk of making Canada the 51st U.S. state have infuriated Canadians, who are booing the American anthem at NHL and NBA games. Some are canceling trips south of the border, and many are avoiding buying American goods when they can.
The surge in Canadian nationalism has bolstered the Liberal Party's chances in a parliamentary election expected within days or weeks, and Liberal showings have been improving steadily in opinion polls.
"We have made this the greatest country in the world, and now our neighbors want to take us. No way," Carney said earlier.
After decades of bilateral stability, the vote on Canada's next leader now is expected to focus on who is best equipped to deal with the United States.