The U.S. citizenship status of children born in the United States to non-citizen parents has been generally accepted as settled law since 1898, when the Supreme Court held in U.S. v. Wong Kim Ark that almost all such children were entitled to citizenship by the Fourteenth Amendment to the Constitution.
Amendment XIV to the Constitution, Section 1. 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. 意思是『非美國公民在美國出生的子女具有美國公民權。這項法律是在1898年當美國最高法院在一場判例中根據美國憲法第十四條修正案決定在美國出生的子女具有美國公民權。』 其中提到的『美國憲法第十四條修正案中的第一段文字是所有在美國出生或歸化而為美國法律所管轄的人具有美國和所居住州的公民權。』