Our position as the international hegemon is definitely in decline, but yeah outright collapse doesn't seem likely.
Look at Britain; just a century ago they were in the position we are in now. They're no longer at the head of global empire, but all their political structures and institutions still exist today prettymuch unchanged.
I'm curious if the high ranking Dems will suddenly start noticing Israel's extermination campaign or if they decide "Actually, Trump is so presidential this time, how surprising" like they did that week when he drone struck Suleimani