text:  Well, until last night, if you had said to me, should the 25th Amendment be invoked, I would have said, oh, come on. Yes, he halts. He's tentative. But he knows what's going on. He can articulate most of the time a clear policy if you give him a chance. Last night, it was not certain to me that he's up to the job. Here's what John King of CNN said. Cut five.