Form N-400

Form N-400 is the application form used by individuals seeking U.S. citizenship through naturalization. It collects personal information, details about your background, residency, and moral character, and tests your knowledge of U.S. history and government. The form helps authorities assess whether you meet requirements such as continuous residence, good moral standing, and ability to understand English. Filing this form is the first step in the process to become a U.S. citizen, ultimately leading to an interview, a civics test, and, if approved, a citizenship ceremony.