The videotaping of the payoff was done at the Ritz-Carlton hotel in Arlington, Virginia which is the same hotel at which Linda Tripp audio taped a conversation with Monica Lewinsky at the behest of Ken Starr.
TEACHING POINT: If you are preparing to do something illegal and the person with whom you are conspiring suggests you do the deal at the Ritz-Carlton in Arlington … Don't.
The FBI has permanent camera positions and microphone locations there.
Senators and Representatives … shall in all cases, except treason, felony and breach of the peace, be privileged from arrest … and for any speech or debate in either House, they shall not be questioned in any other place.
It is the fact of having taken a bribe, not the act the bribe is intended to influence, which is the subject of the prosecution and the speech-or-debate clause interposes no obstacle to this type of prosecution.