I mean in terms of the geopolitics of the home region and local resources, the United States has the potential to be in a good position in this unfolding crisis. However, the decentralized nature of it's constitution makes that better said than done. The way they would justify taking action, as they have justified all things done nationally over the last century, would be through the Federal government's enumerated power of maintaining the military, and all the economic sectors that come with it.

The prospect of an American collapse further frightens me because of the question of who would receive control of its arsenal of world ending weapons. It could potentially make the attempts by more responsible actors like China to mitigate this climate crisis a moot point, which is why the Chinese (or any power of note for that matter) have always wanted a stable America.