“You sound concerned.”
Don’t know what you mean by that... No, I haven’t seen his birth certificate, but I have spent the few minutes of study required to understand what the fuss is about. One fact that doesn’t fit with theories of him born outside Hawaii is the birth announcement in the Honolulu newspaper a couple days after he was supposed to have been born. It is available in their archive, and it seems a bit of a stretch to claim his mother submitted fraudulent information overseas immediately afterward.
So you can go with the “natural-born” angle, but as the more knowledgeable poster above me wrote, it’s not going very far.