U.S. Visas: N-400

Application for Naturalization

Form N-400 is the application for U.S. citizenship (naturalization).

Who Can File Form N-400?

The applicant must be presently in the U.S. in order to file the N-400.

Additionally, to file Form N-400, you must be one of the following:

• A lawful permanent resident for at least five years and at least 18 years old;
• A lawful permanent resident for at least three years and at least 18 years old AND married to and living with the same, U.S. citizen for the last three years AND your spouse has been a U.S. citizen for the last three years;
• A member of one of the several other groups eligible to apply for naturalization (e.g. a national but not a citizen of the U.S.) and at least 18 years old; or,
• A person who is eligible for citizenship application as a result of honorable military service.

How Long Is U.S. Citizenship Valid?

U.S. citizenship is valid indefinitely.

Are Dependents Eligible for U.S. Citizenship Via Form N-400?

Children under 18 may automatically become citizens when their parents naturalize. If certain requirements are met, Form N-600, Application for Certificate of Citizenship, could be filed on the child’s behalf.

Other dependents do not automatically become citizen when the primary applicant (e.g. spouse) is granted U.S. citizenship.