No, not Vice President Biden. The sign language "interpreter" at the Mandela memorial service:
But now we learn the guy was potentially dangerous, his criminal case files “mysteriously empty,” with a tendency towards hallucinations and violence by his own account… hired by a shadowy fly-by-night firm that promptly flew by night and disappeared… and yet he managed to get onstage with the President of the United States. The Secret Service must be having some interesting closed-door meetings right about now.
No worries. Why would anyone be fired for this? The Secret Service did prevent any crazy, dangerous Tea Party types from getting close to President Obama, so it was mission accomplished all the way around.