Constitutional law: Individual rights - Citizenship (Part 1 of 2)

Acquisition of nationality.

There are various ways a person can acquire United States nationality, either at birth, by naturalization, or through court decisions and/or treaties.

Birth within the United States.

Section 1 of the Fourteenth Amendment provides 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." The language has been codified in the Immigration and Nationality Act of 1952, section 301(a). Regardless of the status of the parent, unless they are in the employ of a foreign government, birth within the territory confers nationality. The Supreme Court has not explicitly ruled whether children born in the United States to unauthorized migrants present in the country are birthright nationals, but it is generally presumed they are. Birth certificates from U.S. jurisdictions are typically acceptable proof of nationality.

Through birth abroad to United States citizens.

For children born abroad, a Consular Report of Birth Abroad may be requested to confirm entitlement as a national. Section 301(c) of the Nationality Act of 1952 extends automatic nationality at birth to children born abroad to two parents who are U.S. nationals, as long as one of the parents resided for any length of time in the United States or its possessions. Section 301(g) establishes that to attain automatic nationality for a child born abroad to a citizen and a foreign national, residency in the United States or its possessions is also required. Time served as active military service was considered equivalent to residence in the U.S. For children with one national parent, requirements vary, depending on when they were born, and whether the parents were married.