Further his natural born eligibility is eroded in the definition of allegiance, citizenship and laws that govern you as a citizen of the country from whence you came.
You will find a further definition in the 14th amendment:
All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside.
Barry's Father was a citizen of Kenya and subject to jurisdiction of said country. In other words he is entitled to or restricted to any conveyance of laws by the country of Kenya.
Barry acknowledges this and apparently no one cares. Barry tells you proudly that he was a citizen of Kenya due to his father's citizenship. It is there in plain view, unabashedly.
Was Barry a citizen of the United States at the time of his birth? The answer is probably no and you will find others who will add to this post, shortly.
Even if he was born here, which is very much in doubt, he cannot be a "Natural Born Citizen" as his father was a Kenyan, making him a citizen of Kenya. If one wants to extend to him citizenship because his mother was born here and was citizen at the time of his birth, again the argument that he is "Natural Born" falls apart and he admits as much. At best he would have a divided citizenship and thus his ability to be President by a clouded birth of citizenship which the Constitution, the Supreme Law of the Land, makes a clear distinction as to who qualifies.
Bottom line is Barry was a citizen of another country at birth and his citizenship at birth is clearly not natural born.
Both Parents are required to citizens of the United States and subject to the jurisdiction thereof. You will find reasons why they could be disqualified as being under the jurisdiction of the United States to bolster your argument but that might be for another time.
I much as I would like to believe you, you have this a bit mixed up. By your logic anyone born on US soil but to a foreign father is not a natural born citizen. This would have shut everyone up about Barry’s bogus citizenship long ago and it is unchallenged that his father is Kenyan. I also think have the father/mother thing wrong, as unless we are doing genetic testing to establish birth certificates, then all a woman has to do to establish citizenship for her child is to lie about who the father is. Thus a kenyan woman could lie and say the father is a US citizen and her kenyan born child becomes a US Citizen. I know that ain’t right.