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,

Trump underscored his intention to use tariffs as a tool of international economic policy and an increasingly vital source of government revenue.

While much about the threatened tariffs is still unclear, experts predict they would be bad news for all three economies, with few winners.