Come on, David. Evene you would agree that if a person obtained dual citizenship after being natural born, and subsequently exercised the citizenship of the other nationality, that would be a prima facia rejection of natural born status under the apparent definition held in common by the writers of the Constitution.
Well sir with all due respect, I don't know that I would agree with that--I have to think about it. Maybe. In the current political environment, I think if Barack was born in Hawaii and later obtained Indonesian citizenship which instead of repudiating when he got to 18 or 21 affirmed it as a basis for getting a US College education for free, I still think the Supreme Court probably doesn't let you kick him out.
Since I know he was born in Kenya (proof in court may not be exactly easy) I haven't really considered the collateral issues--I don't think the Court will likely kick him out over those although it probably should as you suggest.
But what I am doing is thinking about the kind of questions you would get from the bench if you ever got to argue the legal proposition to a Court.