Threats by President-elect Donald Trump to impose U.S. tariffs on its immediate neighbors appear to have created a split between Canada and Mexico, after Canadian officials said problems with the two countries' borders were not comparable.

President-elect Donald Trump wants to impose a 25 percent tariff on goods from Mexico and Canada, which could impact Texas more than most states.

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.