The American president recently started fixating on the line separating the United States and Canada. It’s worth asking why.

President Donald Trump continued to belittle Canada and threaten it with joining the United States as the economic war with the country continued.

President Trump, in an early February call, challenged the border treaty between the two countries and told Justin Trudeau he ...

Publicly, Trump wouldn’t let the matter die. In an interview broadcast before the Super Bowl, on February 9, Trump told Fox News’ Bret Baier his plans to annex Canada were a “real thing.” And to ...

But Mr. Trump’s criticisms have upended the business-as-usual atmosphere at the border. Map along the Canada-United States border highlighting Coutts, Canada and Sweet Grass, United states.