Travel to the U.S. is down even more dramatically than we thought, data shows

A truck sits on the American side of the Canada-U.S. border crossing near Hemmingford, Que.

The boycott by Canadians of travel to the U.S., driven largely by an aversion to President Donald Trump, his industry-wrecking tariffs and 51st state taunts, has actually been more effective than previously thought, according to new data.