The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.

CORRECTION: An earlier version of this report misstated the day President-elect Donald Trump threatened tariffs on Mexico, Canada and China.  President-elect Donald Trump has already begun to captivate financial markets with his unorthodox negotiating style,

While the announcement is almost certainly bluster to bring attention to illegal immigration and fentanyl smuggling, there are several reasons why it is so risky.