 On MSNBC's Morning Joe today, Mika Brzezinski, the co-host of that program, asked the president if he has been examined by any kind of doctor who specializes in Parkinson's or other issues involving the brain. And he seemed to sidestep that, but just again insisted that he had a bad night during that debate the week before last. Well, let's go live to National Journal Editor-in-Chief Jeff Dufour. He's with us on Skype.