An Act of April 9, 1866 established for the first time a national law that read,“all persons born in the United States, and not subject to any foreign power, excluding Indians not taxed.” Rep. John A. Bingham, chief architect of the 14th Amendments, said this national law (Section 1992 of the US Revised Statutes) was “simply declaratory of what is written in the Constitution, that every human being born within the jurisdiction of the United States of parents not owing allegiance to any foreign sovereignty is, in the language of your Constitution itself, a natural born citizen.”<quoted text>
A person born in the United States is a citizen regardless as to the citizenship status of his or her parents. An alien by legal definition is a person born outside the United States. There is no such thing as a native born alien. That term doesn't exist.
In fact, courts only recognized two types of citizens, natural born or naturalized. Moreove, courts have established that naturalization acts only apply to those born OUTSIDE the United States.
Therefore, using birthers logic, if Obama is a native born alien then he can't be a natural born citizen and neither can be naturalized citizen since he was born in the United States.
Obama was born a citizen of his father's nation, therefore not eligable to receive US citizenship.