just tried below steps last Friday: USCIS SR Steps: 1. Call 1-800-375-5283 2. Press 1 for English 3. Press 2 for pending case 4. Press 1 for checking status of pending case 5. Input case # (WAC, LIN, SRC, etc) 6. Press 1 for confirmation 7. Press 3 to continue (tier 1 will talk to you and you just ask for tier 2 officer and waiting time is over 1hr and you leave your contact#. Then after about 1 hr you will get phone call from a tier2 officer)