A person is determined to be a United States Citizen by one of the following, Birth, Naturalization or a Foreign-Born Child to US Citizen.
A person born in the US, one of it's territories, or born to a US Citizen on foreign soil is a US Citizen. The US and it's territories are defined as follows with some exceptions:
Naturalization is the process by which a foreign-born citizen or a National is granted full US Citizenship.
Foreign-Born Child to US Citizen (includes adoption)
A Foreign-Born Child of a US Citizen, including adopted children, residing in the US automatically acquire citizenship, provided all of the following requirements are met:
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