Trump threatens to impose sweeping new tariffs on Mexico, Canada and China on first day in office

Does this actually help anyone anywhere? For Americans it will cause price increases and hardship. For Canadians and Mexicans it will cause unemployment and hardship, and there will probably be retaliations that will cause price increases and further hardship. It seems China's in the best position to come out of this OK, since they already sell stuff all around the world. They'll take a hit but not as big a hit as the countries in North America.

I guess maybe it helps Russia with the ongoing project of undermining the USA and its allies from within.