try this on for size~~~Minor v. Happersett (1874) defined NBC as jus soli jus sanguinus
Requirement for Article II s.1 is both parents US citizens, child born on US soil.Obama has never been a natural born citizen
he was born British, his father was UKC citizen
this is by the British Nationality Act of 1968
Additions might always be made to the citizenship of the United States in two ways: first, by birth, and second, by naturalization. This is apparent from the Constitution itself, for it provides that "No person except a natural-born citizen or a citizen of the United States at the time of the adoption of the Constitution shall be eligible to the office of President, and that Congress shall have power "to establish a uniform rule of naturalization." Thus, new citizens may be born or they may be created by naturalization. The Constitution does not in words say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that. At common law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives or natural-born citizens, as distinguished from aliens or foreigners. Some authorities go further and include as citizens children born within the jurisdiction without reference to the citizenship of their parents. As to this class there have been doubts, but never as to the first. For the purposes of this case, it is not necessary to solve these doubts. It is sufficient for everything we have now to consider that all children born of citizen parents within the jurisdiction are themselves citizens. The words "all children" are certainly as comprehensive, when used in this connection, as "all persons," and if females are included in the last, they must be in the first. That they are included in the last is not denied. In fact, the whole argument of the plaintiffs proceeds upon that idea.
It is worth noting that in this case, the Court clearly equates "native-born" with "natural born" citizen, in the general citizenship context, referencing Article II's use of the term "natural born." It notes varying authority as to whether a person born in the US to noncitizen parents may be a "natural born citizen" - but does not address that issue. What is clear, however, is that the Court recognizes two - and only two - types of citizenship: natural born and naturalized.