Interesting thing. ...if no one knows who the whistleblower is, why did Roberts reject the question? Does that mean Roberts knows the whistleblower?
Everyone knows the rumors - including Roberts. He does not want to place himself in the middle of what would happen if he read the question. Can't really blame him.
The proper place for Rand Paul to out the name himself is on the floor of the Senate during normal proceedings - or on Twitter, like he just did.