Last Monday on the website Truth Social, President-elect Donald Trump made clear his intention to impose a substantial tariff on products imported to the United States from Canada and Mexico. Trump announced his tariff plan after alleging that "thousands of people are pouring through Mexico and Canada,

The president-elect’s opening salvo in trade and border talks with the United States’ neighbors is casting a harsh light on the North American alliance.

President-elect Donald Trump intends to follow through on his plan to impose sweeping tariffs on America’s top trading partners — a move that could come at a high cost to U.S. consumers. On Monday, Trump promised a new tariff on all products entering the U.