Somebody alert the President: posting his birth certificate will change nothing. The bigots will still hate him. No matter what he does or says, they will hate him.
As someone who was born before WWII, I have heard the voices and read the signs. Oh sure, things are better than they were 50 years ago, but don't kid yourself, even though we are not hanging many people from trees now, we are still a highly ignorant and bigoted society.