What is the purpose of Form N-400, Application for Naturalization?
Form N-400 is officially called Application for Naturalization which is applied when you would like to get U.S. citizenship via the process of naturalization. Upon naturalization, a person who is a permanent resident not born in the USA becomes a U.S. citizen on a voluntary basis. It is the most widespread way for persons born abroad to receive U.S. citizenship.
Related
Form N-400 | Application for Naturalization
/form/form-n-400-or-application-for-naturalization/amp/
How does time outside the U.S. count and how are you supposed to state it in the N-400 form?
/faq/how-does-time-outside-the-u-s-count-and-how-are-you-supposed-to-state-it-in-the-n-400/amp/
What is the difference between a Country of Nationality and a Country of Birth in terms of Form N-400?
/faq/what-is-the-difference-between-a-country-of-nationanality-and-a-country-of-birth/amp/
Can you apply for N-400 after your green card gets expired?
/faq/can-you-apply-for-n-400-after-your-green-card-gets-expired/amp/
How can you discover your travel records required for the N-400 application?
/faq/how-can-you-discover-your-travel-records-required-for-form-n400/amp/
How to attach additional records to my N-400 application?
/faq/how-to-attach-additional-records-to-my-n-400-application/amp/
Recent posts
USCIS Processing Times (2026): How to Check Them and What They Really Mean
Learn how to check USCIS processing times correctly, understand what the posted number actually means, compare service centers and field offices, and know when your case is truly outside normal processing time.
Navigating Through the National Visa Center: Key Steps in Your Green Card Process
Read more...
COMPLETE GUIDE TO ADJUSTMENT OF STATUS: UNDERSTANDING FEES, FORMS, AND TIMELINES FOR U.S. GREEN CARD ACQUISITION
Read more...
Form I-134: A Comprehensive Guide to the Declaration of Financial Support for Visa Applicants
Read more...
A Guide to the Affidavit of Support
Read more...
A Full Guide to the H-4 Visa for Family Members of Americans with Work Visa
Read more...