Been failing for decades. It's just become so transparent for the world to see it now. Problem is that it's now an unstoppable train with too much momentum to halt before it does its damage.
Either it picks up momentum and does the world in or we slowly and quietly whimper to a lingering slow dissolution here. Either way, the US as you know it has a terminal disease.
Sadly, like a bull in a china shop, I'd count on the end of the world though if I were a betting man.