Form N-400
Form N-400 is commonly used for naturalization. This guide explains what the form is, who usually files it, what notices may arrive, and how MiCaso can help you track the case.
Last updated: 2026-07-14
What the form is
naturalization
Who commonly files it
Eligible permanent residents commonly file this to apply for U.S. citizenship.
Common case stages
- receipt notice
- biometrics if required
- case review
- request for evidence if needed
- decision or next interview step
Typical notices users may receive
- receipt notice
- biometrics notice
- request for evidence
- approval notice
- denial notice when USCIS does not approve
Supporting-document overview
- identity records
- immigration notices
- civil documents
- translations when required
- supporting evidence specific to the benefit
Common USCIS statuses
Case Is Being Actively ReviewedCase Is Being Actively Reviewed is a USCIS case update tied to the review stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.Biometrics Appointment Was ScheduledBiometrics Appointment Was Scheduled is a USCIS case update tied to the biometrics stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.Biometrics Were TakenBiometrics Were Taken is a USCIS case update tied to the biometrics stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.Interview Was ScheduledInterview Was Scheduled is a USCIS case update tied to the interview stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.Interview Was Completed and My Case Must Be ReviewedInterview Was Completed and My Case Must Be Reviewed is a USCIS case update tied to the interview stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.Case Was ApprovedCase Was Approved is a USCIS case update tied to the decision stage. MiCaso explains it in plain language so you can understand what to check and what may happen next.
FAQ
Can MiCaso file Form N-400 for me?
MiCaso helps you track and organize your immigration information. It is not a law firm and does not replace professional legal advice.
Are these Form N-400 processing times current?
No live processing-time number is published here. Check USCIS for official estimates.
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