It's a constitutional crisis, all right

But not the way you think, Mr. Holder:

Facing a possible contempt charge and Republican calls for his resignation, U.S. Attorney General Eric Holder signaled to Congress Tuesday a new desire to cooperate with an investigation into the Fast and Furious gun walking operation to avert what he believes could become a "constitutional crisis."

The only constitutional crisis here is being provoked by you, by refusing to submit to legitimate Congressional oversight and investigation into probable wrongdoing by your department.  Checks and balances, asshole.  Checks and balances.

And chickens coming home to roost.  Mind the chickenshit, that's hell for your dry cleaner to get out.

H/T.