After you file an appeal, you’ll get a letter that:
You may get a letter from us asking for more information or documentation, like a copy of a passport. If you send this information to us, we may be able to informally resolve your case fairly quickly.
It's a good idea to save copies of all forms and notices related to your appeal. If needed, you can also request a copy of your appeal record.
In general, we must tell you our decision and mail our response within 90 days of when we received your appeal request.