Jus sanguinis (Latin: right of blood) is a principle of nationality law by which citizenship is not determined by place of birth but by having one or both parents who are citizens of the state. Children at birth may automatically be citizens if their parents have state citizenship or national identities of ethnic, cultural, or other origins. Citizenship can also apply to children whose parents belong to a diaspora and were not themselves citizens of the state conferring citizenship. This principle contrasts with jus soli.
Jus soli (Latin: right of the soil), commonly referred to as birthright citizenship, is the right of anyone born in the territory of a state to nationality or citizenship. As an unconditional basis for citizenship, it is the predominant rule in the Americas but is rare elsewhere. Since the Twenty-seventh Amendment of the Constitution of Ireland was enacted in 2004, no European country grants citizenship based on unconditional jus soli.
A person who becomes a U.S. citizen through naturalization is not considered natural born citizen. Consequently, naturalized U.S. citizens are not eligible to become President of the United States or Vice President of the United States, which would ordinarily be the case as established by the Presidential Succession Act.
Some argue that the phrase “natural born citizen” describes a category of citizenship distinct from that described by the phrase “U.S. Citizen” in Article Two of the United States Constitution, and this was discussed during the Constitutional convention of 1787. While it is true that “natural born citizen” is not defined anywhere within the text of the Constitution and that the Constitution makes use of the phrase “citizen” and…