You must have an appointment to visit this office. USCIS offices do not allow walk-ins. If we are closed, we will automatically reschedule anyone with an in-person appointment and notify them. You do not need to reach out to the Contact Center. If you are unable to attend your scheduled ASC appointment, you may request that USCIS reschedule your appointment. To request a reschedule, please follow the instructions on your biometrics services appointment notice or visit our website for more information. Federal law prohibits weapons like firearms, knives, pepper spray, and ammunition at any USCIS facility. Even if you have a permit for a firearm, you cannot bring it to a USCIS building. Violators may be subject to fine and/or imprisonment.