They'd also be investigating Chinagate, Pardongate, and a half dozen other -gates, too. But they know the media will label them scandalmongers, so the Repubs are scared to do anything. The Repubs let the media publicly flog them for 8 years while Klinton laughed and openly accepted bribes for anything and everything including nuclear technology and pardons.
I think the media is just an excuse move-on'ers use because the media wouldn't trump a real investigation and the courts. The media would have a hard time spinning matters like election tampering, blackmail of Congress, treason, murder and mass murder. The real reason is more sinister. The democRATS have something on Bush and the Republicans ... something just as bad as those crimes. Didn't Stephanopolis say just that? He would know.