In Obama's case, only his Mommie was a U.S. citizen, so she could not automatically confer natural born citizenship on her son.
See, we need to know this. Only I was an American citizen. But I had spent the required adult years in the States. Can one American parent confer natural born status or not? The Supremes need to get onto this.
Yes. And, under the law at the time, could it be the mother or did the citizenship by descent have to come from the father?