So them maybe all the candidate's parents have renounced their citizenship. Prove that they didn't.
Aren't you concerned that old Fred & Mary Ann Trump may have done that?
Sure. I happen to believe that natural born citizen means citizen at birth, so really, it wouldn’t matter if they’d both defected years earlier to the Soviet Union and publicly renounced all ties to the U.S., Trump is a natural born citizen because he was born here. But hey, if someone else thinks otherwise, then I would urge Trump to get his parents birth certificates and put those out too.