Also, Putin owns him. Russian TV broadcasting nude photos of his wife drove that point home: that Trump may fume and rage all he likes, but Russia has enough leverage to ensure that he’ll obey.
Maybe it’s the legendary Pee Tape, and maybe it isn’t. By now, they undoubtedly have an entire laundry list of kompromat that they can pick and choose from.
I wondered the other day - what possible kompromat could they have that gives them any leverage now? He won't be prosecuted, and his base evidently does not care (and won't matter as much now that he's been reelected), so even if they have video evidence of murder or CSA, I don't see it harming him...