On the one hand, it wants to get as rich as possible as fast as possible. On the other hand, it also wants to dominate the world. The two aspirations are in conflict. To get rich quick it has encouraged the arrival of more and more immigrants to the United States. The effect has been to drive down wages.
Lower wages mean bigger profits.
Bigger profits mean higher share prices. But there is a downside. The more immigrants that come in, the more the United States is stuck with minorities whose ultimate loyalties will always be suspect. And nothing is less conducive to an imperial foreign policy than a populace full of potential subversives. For the rich, US immigration policy has unquestionably been a wild success.