Twitter will remove Donald Trump's protections after he leaves office (presumably) on January 20, 2021. Afterward, his tweets will be subject to removal if they're deemed to violate Twitter's rules.
https://www.techspot.com/news/87509-twitter-stop-protecting-trump-tweets-once-leaves-office.html?utm_source=dlvr.it&utm_medium=blogger
https://www.techspot.com/news/87509-twitter-stop-protecting-trump-tweets-once-leaves-office.html?utm_source=dlvr.it&utm_medium=blogger