Doesn't tapping a landline or mobile require a court order? Because what they're asking for re social media and email appears to just be free access to the private data of any American citizen who uses any of those services.
That would certainly be a fair argument if people were only allowed to use Facebook and Twitter. At the moment though there's nothing stopping people using other services, or getting information from elsewhere on the internet.
It's also worth mentioning that Twitter and Facebook aren't preventing conservative thought and discussion, they're simply tagging content that is deceptive. You can talk all day on there about small government, the need for border controls, and the sanctity of marriage or whatever, but they increasingly won't allow people to spread downright lies and conspiracy theories. Their previous reluctance to censor this kind of content is exactly why they received such huge criticism in the past, and why governments around the world have been threatening to legislate unless they acted on it. It's not an attack on conservative thought unless you think conservative thought is inherently dishonest (which neither I nor they do). They will apply the same restrictions to conspiracy theories or lies from the left.