U.S. President-elect Donald Trump sent shockwaves through global trade by threatening 25% tariffs on Mexico and Canada, effectively ripping up a regional trade agreement, if the two countries didn't do more to curb migration and the flow of drugs.

Canada has drawn up an initial list of C$150 billion ($105 billion) of US-manufactured items that it would hit with tariffs if President-elect Donald Trump decides to levy tariffs against Canadian goods,

Canada could impose countermeasures on up to C$150 billion worth of U.S. imports if President-elect Donald Trump puts tariffs on Canadian goods and services, a source familiar with the matter said on Wednesday.