I think that Agent Galvez is definitely the mole. We had clues last week, and now this week. He was sitting front and center at the CIA, and when Saul mentioned how 16 agencies had been infiltrated, they show Galvez. Also, Carrie asks for Galvez, saying "he knows everything". No, it can't be David Estes, he's just her…

Am I the only one who thinks that Galvez, Carrie's assistant is the mole? I also think he was the 2nd secret service agent to enter Brody's house, and possibly put some surveillance equipment in Brody's house.