In this country you are innocent until proven guilty. Obama explained his relationship with Ayers. Is this like McCain's insane statements that he knows how to win a war, he knows how to get Bin Laden, etc? If he knows these things, let's see some proof. If he knows Obama had a different relationship, let's see the proof!!! He is asking Obama to prove his innocence. Maybe we need McCain to prove he does not have PTSD. You'd think just crashing 5 planes would give you that, not counting 5 years in a box. McCain is desperate. He feels he deserves to be president yet does now know how to get there and instead of trying the high road, he takes the gutter. We are smarter than that.