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.