With climate change being inevitable now and leading to more and more catastrophes, massive refugee streams and conflict and wars, the USA is in a unique position with only two borders to friendly countries and two oceans effectively protecting them. Especially after the oil that fuel big warships becomes too scarce.
Of course it's speculation how exactly this will play out, but I believe Europe, Africa, India, China, Russia will all be embroiled in the "climate wars" while the US can continue to snipe from their big continent.
The only thing they really have to do is weaken their opponents and then draw back and avoid being drawn into a nuclear war. Then they win by default.
PS: Of course having high tech chip manufacturing is essential to that.