Already begun.
"Senator Ted Cruz:
The pattern of political censorship we are seeing across the technology companies is highly concerning.
If you’re a public neutral forum, that doesn't allow for political editorializing & censorship. If you're not a neutral public forum, the entire predicate for liability & immunity under statute is claiming to be a neutral forum—you cannot have it both ways."
http:// redstatewatcher.com/article.asp?id=113984