Then that would make him a natural born citizen.
Yes, it sure would.
Except, Frank Davis was an avowed Communist. So if he renounced his U.S. Citizenship as many commies did, then all bets are off.
But even if Davis didn't, Barry would have a legal problem. Like committing Fraud and violation of other pesky little Federal Laws under the false name of Barack Hussein Obama.
btw, I looked closer at those pictures. Barry's head is even shaped liked Davis'.