> After killing all of the competition, a monopoly could threaten to drop prices again if anyone else sprung up. That is enough to act as a deterrent, if you want to find out about the economic arguments before or against, research the history of anti-trust.

If we want to introduce tariffs, why not wait until we see China PR actually show monopolistic behavior? My gut reaction is that because the US is such a big customer, China PR will not be able to do that.