If Trump is successful in getting Section 230 of the Communications Decency Act removed, the site could be sued for anything a user posts. Given his big move to threaten the big bill with a veto unless that happened failed, it's not gonna happen in the next 23 days.
You can read more about it here:
https://techcrunch.com/2020/12/23/trump-ndaa-veto-section-230/