The point about removing Trump's tweets is interesting, b/c it'd likely be difficult.

As President, Trump has broken Twitter's TOS before, like in 2017 when he said N.Korea "won't be around much longer" (threats of violence). In that instance, Twitter didn't enforce their policy https://twitter.com/AlexMillerNews/status/1265273763194638336

After being accused of not enforcing their policies, Twitter last year changed their rules on what constituted speech from public figures/when it's censored. Now, Twitter says violating tweets can stay up if they're from gov. officials and if they're in public's interest to see.

This kind of "public interest" reasoning makes sense in order to create an official record of what happened. But it does give Twitter a lot of leeway in deciding:

1) when they'll actually step in to enforce their policy
2) what content is and isn't in the public interest

https://twitter.com/donie/status/1265280488312315905

Update per this thread: Twitter has said that's it's not going to take down the Tweets.