Regarding the issue of his father being a kenyan, and thus making him a double-citizenship, which would disqualify him as a natural born citizen,
I have heard it argued that a baby born under those circumstances have until they are 18 to declare for themselves to being a double-citizen or not. He made no such declaration, thus causing him to default to single citizenship, natural born citizen.
now, I do not have a clue if this is a factual argument or not. Does anybody know for sure about that?