Because processing times for U.S. Citizenship and Immigration Services cases can run anywhere from several weeks to several months, the optimal time for checking case status varies, according to Bridge U.S. The USCIS can send automatic emails or texts to notify those waiting regarding any status updates to their cases.
To check the status of a USCIS case, the person involved must have his unique, 13-character case receipt number available, USCIS explains. Using this number, the person can see the most recent action taken on his case. Those waiting for USCIS decisions can also check case status by phone, by mail or by scheduling in-person InfoPass appointments at the nearest USCIS office, notes Bridge U.S.