The United States could invade and occupy Canada easily enough, but it would have little to gain by doing so.

The return of Donald Trump — and his jokes about the 51st state — will likely provide new opportunities for Canada to decide how much and how loudly it wants to differentiate itself from its neighbour.

Canada could impose countermeasures on up to C$150 billion ($105 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.