Twitter, Facebook etc. are communication platforms in the same way the postal service, telephone system, etc are communications platforms.
Communication platforms in the US should adhere to the US constitution.
Communication platforms in the US should adhere to the US constitution.
Or just on the basis of the one or more places the company itself is are incorporated? Will they shop around for communication laws the same way they do for taxes?
Isn't this where the entire problem is coming from? If this were a state run service, we know the answer and can apply it easily.
The confusion is coming entirely from it being something other than the state.
Facebook and Twitter run websites.