An International Man lives and does business wherever he finds conditions most advantageous, regardless of arbitrary borders. He's diversified globally, with passports from multiple countries, assets in several jurisdictions and his residence in yet another. He doesn't depend absolutely on any country and regards all of them as competitors for his capital and expertise.
Living as an international man used to be just an interesting possibility. But few Americans opted for it, since the US used to reward those who settled in and put down roots. In fact, it rewarded them better than any other country in the world, so there was nothing pressing about becoming an international man.
Things change, however, and being rooted like a plant, at least if you have a choice, is a suboptimal strategy for surviving and prospering. Throughout history, almost every place has at some point become dangerous for those who were stuck there. It may be America's turn.