Why wasn't Obama required to undistubably prove that he actually was born in the U S A, B4 he was allowed to?

Well, it seems that it's "undistubable" that your statement is a load of horse poop. Although I must admit that the grandmother angle is a new one. What's next? Home videos of Obama's birth in some Kenyan village attended by the local witch doctor? Give it a rest already. The man was born in Hawaii,