It would seem to me that one could have a standard video recording sign on the front of the building notifying that all occupants are under video and audio surveillance. Then have a camera and audio recording of the meeting without having to produce the tape recording machine. That way you would have the meeting, record it accurately and then you can dispute what ever form was produced by the agent.
I suspect that there is some local or federal law that would prohibit that particular action. Any legal eagles want to comment?