Only if you find a way to tax the rich in other countries.

Taxing the US rich redistributes money within the country while the problem (or a perceived problem, depending on your stance) is that US bleeds money across the board.

Is the the "rich people will leave" argument? I can't tell.

If they're not willing to participate, I think we should call their bluff. We have helicopters and aircraft carriers, I don't think we couldn't track down a few rich tax evaders.