Literally nothing is going to happen to them. If we're lucky, Trump doesn't go full dictator and we just have another election where they back whoever the candidate is and fully support whatever it is they want to do. There is no world where they face any sort of backlash/accountability for their actions that they haven't already from family/friends.
If history has anything to say about them, it will be like Germany where in a decade or so suddenly "no one" voted for Trump. No one admits it