We agree that Obama is NOT a natural born citizen, but if one’s father held a Green Card, that would not meet the criteria of a natural born citizen- both parents must be citizens.
You wrote-
“Correction: If Obamas father had been a Green Card holder, perment resident of the U.S. and we know Dunham was an American, Obama would have been a NBC. He is NOT!”
Fther didn’t have a green card. He was a student, not a permanent resident.