Kos knew who it was and promised the Kossacks the other day that it would make the nutroots’ heads explode when they heard, which made me think it must be either MM or InstaGlenn. Nope. Even explodey-er!

Exit question one: What does it say that Newsweek evidently regards this guy and Kos as “counterparts”? And exit question two: Doesn’t our mystery man have better gigs lined up for his retirement or has it really come to this?

Update: Yet another exit question. Immigration is expected to play a prominent part in next year’s election; pray tell, which of our two correspondents will be defending the enforcement position?