But we've knew that! Obama has been open about this fact ever since he entered politics.
therefor Obama is not a natural born citizen, which requires both parents to be citizens at the time of birth,
That is simply not true.
The INS records are clear that the father was not a US citizen,
Everyone that actually paid attention to politics, and the slobbering obot fools, might have known that Bammy Barrock’s Daddy was never a citizen, but the media said little Bammy had a birth cirtification from Hawaii.
You are incorrect, sir. Constitutional law clearly points to the fact that both parents must be citizens to be natural born. Being born in this country or being naturalized confers citizenship but natural born is a specific status created by the Founders to prevent undue foreign influence on the Presidency.
A lengthy Freep post on four Supreme Court cases concludes, "the Supreme Court of the United States has never applied the term “natural born citizen” to any other category than “those born in the country of parents who are citizens thereof”.
Minor v Happersett in 1874 was clear 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." Supreme Court Cases
Here is an informative essay of the origin of natural born citizen in law at the time of the writing of the Constitution.
Natural Born Citizen
For further curiosity, look at how Chester A. Arthur lied about his father's citizenship to avoid the natural born citizen issue.