A “natural born Citizen” is a child born in the USA of two (2) U.S. Citizens. The parents can be Citizens by Birth or they can be Citizens by Naturalization after immigrating to the USA. But to create a “natural born Citizen” of the United States both parents must be Citizens at the time the child is born in the USA. See this legal reference book used by the founders and framers of our Constitution: Law of Nations or Principles of Natural Law, Vol.1 Chapter 19 Section 212, Emer de Vattel, 1758-1797. The overwhelming majority (probably 95%+) of citizens in the United States are natural born Citizens. It is from the group of natural born Citizens that our founders prescribed in the presidential eligiblity clause in Clause 5, Section 1 of Article II of the U.S. Constitution that we shall choose a President and Commander in Chief of our military as a strong check against foreign influence via birth allegiances on the person in that singular and most powerful office. One needs all three citizenship legs to be a natural born Citizen and have sole allegiance and claim on you at birth to one and only one country — the United States: 1. Born in the USA. 2. Father must be a U.S. Citizen (born or naturalized). 3. Mother must be U.S. Citizen (born or naturalized). Like a three legged stool if you take away any of these three citizenship legs of the requirements to being a natural born Citizen, the child is born with more than one claim of allegiance/citizenship on them at their birth and thus they are NOT a natural born Citizen of the United States, and as in the analogy of a stool designed to stand on three legs and it is missing a leg, it falls down, likewise the person’s claim to natural born Citizenship fails if the person does not have all three citizenship legs required to be a natural born Citizen at the time of their birth. See this Venn Diagram which shows how that having the intersection and unity all three statuses at birth: location of birth in the U.S., U.S. father, and U.S. mother all being U.S. at the time of birth is the way one achieves natural born Citizenship status. Over 95% of Americans fit that requirement and it is from those 95% that we shall choose our President and Commander-in-Chief, not the son of a foreign national and British Subject father as is the case with Obama’s birth status.