No person except a Natural Born Citizen, or a Citizen of the United States,at the time of the Adoption of this Constitution shall be eligible to the Office of President… Article II, Section I, Clause 5 of the Constitution
We’ve ALL been asking the wrong questions about Obama’s citizenship … demanding the wrong proof! 
Instead of asking where is Obama’s long form birth certificate, or asking for him for the production of the myriad records that verify he is who he says he is, we should be asking Obama to prove that he wasn’t born aBritishNatural Born Citizen. One is a natural born citizen at the moment of birth with the family lineage or the bloodline of the father the prime determining factor of birthright and citizenship. To be a natural born citizen of the U.S. both parents must be U.S. citizens at the time of a child’s birth. One can become a naturalized citizen but the status/identifier of “natural born citizen” cannot be conferred or acquired at some future date in the same manner that SR 511 attempted with John McCain. In other words, saying it doesn’t make it so! Anyone who has read about Obama’s ineligibility to be POTUS at length is bound to have read J.B. Williams posts at Canada Free Press here and here. He is the only writer to investigate who has been behind the Quashing of Obama’s birth certificate issues in detail. It was one of his recent posts that triggered approaching Obama’s Natural Born Citizen status from a different perspective.
Webster’s definition establishes birthright as “Any right or privilege, to which a person is entitled by birth, such as an estate descendible by law to an heir, or civil liberty under a free constitution.” Such as, a child inherits his/her father’s name automatically at birth, as well as heir to his fortune and his citizenship. No man-made laws are needed. In every civilized nation on earth, the “natural born child” automatically inherits their father’s name and all other related birthrights upon birth, with no statute required.
If Barack Hussein Obama’s father had been a legal citizen of the U.S. at the time of Barack II birth, Barack II would enjoy not only his father’s name, but his citizenship in the United States as well, and no man-made law could block his birthright to status as a “natural born citizen” of the USA. However, Obama’s father was at no time a citizen of the USA. He was at all known times in his life, a citizen of Kenya, which at the time was still under British rule. Barack Hussein Obama II father was a legal citizen of Kenya. As the “natural born” son of Barack Hussein Obama I, Barack Obama II is the “natural born citizen” of Kenya, which is why his family, friends and the press referred to him as “Kenyan Born” all the way up until he decided to run for the office of president.
History answers the question of what “natural born citizen” means, and leaves NO wiggle room for debate or wishful agenda-driven interpretations.
Sorry Alessandro, Natural Born Citizenship happens at the time of birth. One can be naturalized but not natural born at some future time,
One need only go back to the 2000, when honest open discussions about natural born citizenship took place in Congress. Barney Frank headed a hearing on a CONSTITUTIONAL AMENDMENT TO ALLOW FOREIGN-BORN CITIZENS TO BE PRESIDENT called H.J.Res. 88.
Please read this post for further information and detail about Res.88 and how members of Congress have ALWAYS known Obama was ineligible. http://wp.me/pujEK-1bF
I believe a person can attain Natural Born citizenship even if the father is not an american citizen as long as both parents clearly show a trend of embracing america rather than distancing themselves as time goes on.
In Barack Obama's case, dad not only left the U.S., but he also became a Kenyan politician. If Barack Obama's dad had stayed in america and eventually become a citizen, I would then consider Obama a natural born citizen, except that is not what happened.