Form N-400

Lawful permanent residents (also known as green card holders) of the United States, who meet the eligibility requirements, can file N-400 form to request citizenship.

[1] In the United States, 8.8 million Lawful Permanent Residents are eligible to naturalize.

[4] You must: The N-400 form is a series of questions about eligibility, personal information, marital history, children, criminal activities and the oath of allegiance to the United States.

Many private sector online services are available to candidates for naturalization to help them complete the form.

[6] After filing the form, the applicant undergoes an interview process with the United States Citizenship and Immigration Services (USCIS).