More from the article...

... The drop in U.S. travel underscores Canadians' resentment toward their southern neighbor, who is their biggest trading partner and was once their favorite vacation destination. ...

Concerns have also grown in Canada that visitors to the U.S. may be caught up in Trump's immigration crackdown.

Amid the strain in the relationship, some Americans also appear to be avoiding Canada, but to a lesser extent. The number of U.S. car trips to Canada fell 7.4% in July from a year ago. ...