Legitimate in what sense?
Maybe he has one, but the information on it doesn't jibe with the image he wants to present.
That's certainly at least as plausible as the notion that his parents went to Kenya and gave birth to him there.
Not legitimate... as in fraudulent. Obama has presented a fraudulent document image which his administration says is legit, and if Obama obtained a Hawaiian birth certificate, I'll bet it is categorized as a late birth certificate that he or his family lied to obtain it.
Yeh -- like the location of his birth in the foreign country of his Muslim father.
It does not matter where he was born. The major sticking point is his father was not a US citizen and his mother was under age. There is no possible way he is a "natural born citizen" as required by the Constitution.
He was born to a Muslim father, adopted by a Muslim stepfather, taken to a Muslim country where he attended a Muslim school. Islam clearly states that children born to a Muslim father are Muslim. If he has renounced his Muslim heritage, he is an apostate.
Regards,
GtG