Sorry to abuse your illusions but some countries have become wealthy by stealing and/or borrowing from other countries - Spain after the conquest of the new world, for example.

It is certainly true that wealth based on conquest or credit doesn't last. That might be a reason for American policy makers to reconsider current policy. But you should never assume that just because a person, organization or country has a fat bank account, they ipso facto worked hard for it. If the world is just, it's only just in a long time frame.