No. Or maybe yes (with the current US government the end of the world is quite easy to imagine... )

But what I can imagine has very little to do with what actually happens.

What you can imagine has very little to bear on what they can get away with without being legally shut down.

I mean, yeah. There's enough nukes locked and loaded around the globe to end human civilization as we know it in minutes. Nobody's made a bomb that can fix socioeconomics.