In order to file for citizenship you should:
- Complete Form N-400
- Fill out the Biographical Information Form G-325.
- Enclose the appropriate application fee of $ 330
- A $70 per person fee for biometrics may be required if you are present in the United States
- Submit two photographs (1.5 inches square with the entire face visible)
- Submit a copy of the Permanent Resident card or Green Card (Form I-551).
Posted in: Citizenship FAQ