If you ever wonder who is watching the watchers and also who is watching the watchers watch, apparently it's the FBI and NPR:

A multi-year investigation leads federal agents to search the Office of Special Counsel's building. Employees have alleged the agency was misused for political purposes. Neither Office of Special Counsel head Scott Bloch nor anyone else has officially been charged with a crime. But the FBI secured a separate subpoena for Bloch's home.