Citizenship
Many children become citizens automatically when a parent naturalizes, or when they receive a green card while under 18 and living with a citizen parent. Form N-600 documents it with a certificate of citizenship.
The forms
The application for a certificate of citizenship — proof for someone already a citizen through a parent.
Questions
Naturalization (Form N-400) is for green card holders — generally after five years, or three if married to a U.S. citizen. The free N-400 early filing calculator shows your 90-day early window.
Part of the naturalization interview: an officer asks you civics questions out loud, and you answer. Our civics test guide explains which version you take. To study, the free practice tool works three ways.
Yes — the N-400 is a self-help petition here. You answer simple questions, the software puts your answers on the official form, and every field, signature, and document is checked before your packet is marked ready.
Go deeper
Citizenship for children