Mickey Edwards, Princeton lecturer and former Republican congressman:
It ranks somewhere on the stupidity scale between plain silly and numbingly desperate. McCain and Obama are both members of the senate and they're both able to help craft a solution if they wish to do so without putting the presidential campaign on hold; after all, I'm sure congressional leaders would be willing to accept their calls if they have some important insights to impart. And while one of them will eventually become president, neither one is president yet, nor is either one a member of the congressional leadership; I'm confident that somehow the administration and the other 533 members of congress will be able to muddle through without tapping into the superior wisdom and intellect of their nominees. Sorry, john; it really sounds like you're afraid to debate. This sounds like the sort of ploy we used to use in junior high school elections.
Then again, remember what happened the last time McCain took a risky move and all the pundits and liberals like me were laughing - I'm referring to Palin, of course, and while McCain has already lost his bump he hasn't lost the enthusiasm. That move may yet end up hurting him in November (since it kills his experience argument) but it wasn't the shot through the heart that many predicted it would be.