Administrative Appeals Office

The Administrative Appeals Office, full name USCIS Administrative Appeals Office, and also known as the AAO and USCIS AAO, is an office within United States Citizenship and Immigration Services (USCIS) that can be used by petitioners to appeal adverse USCIS decisions made on their petitions. It is located in Washington, D.C., and all its in-person functions (including listening to oral arguments) happen only in Washington, D.C. == Appeals process == === Three uses of Form I-290B === Most appeals must be filed on Form I-290B (with a fee) within 30 days of the initial denial.

Source: Wikipedia — Administrative Appeals Office (CC BY-SA 4.0)