N-648 Medical Certification for Disability Exceptions
A doctor's certification that a naturalisation applicant cannot learn English or civics, or cannot meet the oath requirement, because of a physical or developmental disability or mental impairment expected to last at least 12 months. A licensed medical doctor, doctor of osteopathy, or clinical psychologist completes it.
- Fee
- $0
- Fee waiver
- Not available
- Who files
- Naturalisation applicants seeking a disability exception, through their treating clinician.
- Where to file
- Filed with the Form N-400, or brought to the naturalisation interview.
Usually filed with
Part of these processes
What changed in 2025 and 2026
- The 09/25/24 edition simplified the form considerably. USCIS officers may still question a certification, and a rejected N-648 does not by itself sink the application - the applicant can be retested or file a new certification.
Official page. https://www.uscis.gov/n-648. Download the form there, never from a third-party site; check the edition date and fee before filing.