Citizenship and Immigration Services form N-400

Form N-400 is the application used by eligible individuals to request U.S. citizenship through naturalization. It gathers personal information, background details, and proof of residency to determine if an applicant meets the requirements, such as language proficiency, good moral character, and knowledge of U.S. history and government. The form helps U.S. Citizenship and Immigration Services (USCIS) evaluate eligibility and process the naturalization request efficiently. Completing N-400 accurately and thoroughly is essential for a smooth application process and increasing the chances of approval.