"The complicating factor for the President in this case is that, well, he is the President. Not only that, but he uses his account to conduct government business. Because the government is the only body that can violate the First Amendment, that puts Trump's Twitter habits on tricky legal footing, says Danielle Citron, professor of law at the University of Maryland and author of the book Hate Crimes in Cyberspace. "He’s the President. Whenever the government creates zones of public discourse, they have very special obligations under the First Amendment," Citron says."
The Center for Internet and Society at Stanford Law School is a leader in the study of the law and policy around the Internet and other emerging technologies.