I didn't see the 60 Minutes interview yet, though I will shortly. You can buy his book here - currently #5 at Amazon!
... Okay, watched. It was really pretty devastating, with no actual factual rebuttal. I thought Stahl did okay. What I object to most is the perpetuation of the idea that even disagreeing with the president is somehow treasonous or disloyal. Stahl did flirt with this, but much less than most of the Heathers do these days.