The National Geographic film Before the Flood [0] did a reasonably good job of covering this topic. If you haven't seen it, it's worth a watch.
One way or the other, most humans are gonna die before the end of the century and a dramatic reduction of population will happen. The US way of living will also come to an end, it is simply a matter of doing it voluntarily and aim to avoid the worst or having it forced on them by powers over which they have no say and feel the burn.
Frankly I think the more concerning nations would be China and India. India still has something like 30% of its population, which roughly equates the entirety of the US, living without electricity. India's top priority is development and bringing their people out of poverty, and they have abundant coal to do it cheaply.
You can beat up the US all you want, but the multiplier is important and a place like India can easily move the global needle via the slightest improvements to their average quality of life.
I'm hopeful that China uses its position of control over how everything is being made and resulting prosperity to pivot from fossil fuels.
Russia's future in the warmer planet is especially interesting. Imagine what impact Siberia becoming arable land would have on their place in the world.
And after the US Midwest is a desert.
Hahaha. Yeah, come try it asshole. At least you won't have to worry about the climate anymore.