Trump, on his first day in office, suggested he may do just that. Trump has threatened to impose 25% tariffs on all goods from Canada and Mexico on February 1 in response to what he views as inadequate border security failing to stop drugs and migrants from coming into the United States.

Trump's new threat of tariffs on Canada and Mexico will hit far beyond autos and retail, with chemicals companies and freight rails key cross-border players.

As U.S. President Donald Trump mulls imposing 25% duties on imports from Canada and Mexico on Feb. 1, focus has shifted to the sectors likely to bear the brunt of the tariffs. About 28%, or about $844 billion,