> Nothing.... the President is not a king and can't order people/companies to de-exist and can't be above the congress....

You may want to read the article.

He's not saying Twitter "can't exist" (and why would he? It's his platform of choice.) -- it seems like they're going to say that if social media companies start editing content, they're no longer platforms and instead publishers, who can be sued for their content.

This could be very problematic for Facebook, Twitter, and Google, who would suddenly be open to a lot of lawsuits based on their users' content.