Incoming Border Czar Tom Homan weighs in President-elect Trump's tariff threats against Mexico and Canada, the showdown with sanctuary cities and the humanitarian crisis on the border.

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.