True, the photo can be photoshopped relatively easily. However, he doesn't want to lie and say it isn't him.
True, exactly the guy is innocent, he knows if he says it isn't him and it turns out to be a doctored photo of him, the repubs will cry out that he lied, he knows the slimmyness the GOP will stoop down to, that is why Obama had to tell fox news at the dinner that simba cartoon was not his actual birth, the GOP are loonies.