Lol, interesting. But the law at the time stated that his mother must be 19 (lived in the US for 5 years after the age of 14) to confer citizenship to her son which means that the only way he could have received US citizenship and natural born status (possibly) was by being born in the US. So the only way he could possibly be born anywhere but this country and still be a citizen is if he was born out of wedlock, which he clearly states he was not.
Crap, ignore my post a moment ago... wrong thread.
If the marriage was legal, this would apply. Neither British law nor U.S. law recognizes bigamous marriages as legal, and thus the children of such marriages are as if born out of wedlock.
So the only way he could possibly be born anywhere but this country and still be a citizen is if he was born out of wedlock, which he clearly states he was not.
Who clearly states this?? Obama wrote in one of his books that he had doubts about his parents' marriage.