The Natural-born citizen reference article from the English Wikipedia on 24-Apr-2004
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Natural-born citizen

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In general, a natural-born citizen of a country is someone who a citizen at birth rather than by naturalization. (Also see jus soli.)

This term is used in particular as a requirement for becoming President or Vice-President of the United States. Article II, Section 1 of the U.S. Constitution states that:

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; neither shall any Person be eligible to that Office who shall not have attained to the Age of thirty-five Years, and been fourteen Years a Resident within the United States.

In other words, only a citizen by birth (as opposed to a naturalized citizen) can be President or Vice-President. The 14th amendment also states that, "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." However, the 14th amendment doesn't cover some situations (such as children born abroad to U.S. citizens).

Title 8, Section 1401 of the U.S. Code states the following persons are considered "citizens at birth" and therefore eligible to run for President or Vice-President: