From what do either of you base your opinions on, that says the reigning King of Thailand or the current Dauphin of France, are eligible to be the Commander in Chief of our armed forces?
I don't think either of those people were considered to be American citizens at birth. Either way, Obama had a parent (his mother) who was a US Citizen (or are the birthers trying to cast doubt on that, too?!), so these are totally different cases. Furthermore, neither of these people has ever claimed US citizenship, nor lived as a US citizen. Do they have a US passport? Obama does.