Oct 28, 2025 · Naturalization is the process of becoming a U.S. citizen if you were born outside of the United States. Use this form to apply for naturalization if you meet the eligibility requirements.

Find out if you are eligible to become a U.S. citizen, how to apply with USCIS Form N-400, and how to prepare for an interview and naturalization test.

Jul 1, 2025 · The USCIS Citizenship Resource Center helps you learn how to become a United States (U.S.) citizen by birth and through naturalization.

Form N-400, Application for Naturalization, is an application to become a naturalized U.S. citizen. If your biological or legal adoptive mother or father is a U.S. citizen by birth, or was naturalized …

Apply for Naturalization As a lawful permanent resident, you may be eligible to become a U.S. citizen through naturalization. By applying for naturalization, you are taking steps towards …

Find out how to become a U.S. citizen through naturalization. See how to prove U.S. citizenship, get dual citizenship, or renounce or lose your citizenship.

If your application is approved, you will be scheduled for a naturalization ceremony at which time you will be required to take the following Oath of Allegiance immediately prior to becoming a …