Takes the Fifth?

I see where a DOJ official under subpoena from Congress has advised through counsel that he intends to invoke the 5th Amendment when called to testify to Congress.

The chief of the Criminal Division of the U.S. Attorney’s Office in Arizona is refusing to testify before Congress regarding Operation Fast and Furious, the federal gun-running scandal that sent U.S. weapons to Mexico.

Patrick J. Cunningham informed the House Oversight Committee late Thursday through his attorney that he will use the Fifth Amendment protection.

Why, pray tell, would he invoke the 5th Amendment. The normal reason is so that he won'[t have to incriminate himself under oath. Think about that for a minute. The head of the US Attorney's Office in Arizona does not want to incriminate himself under oath. I expect that he'll be disbarred and immediately fired from DOJ. If that doesn't happen, then we'll know that Fast and Furious is a criminal conspiracy.