favored13

My husband came to the U.S on K1 visa July 2021, we got married before the 90 days deadline. We filled AOS October 2021 and received RFE on I-864 Affidavit of Support. We submitted our response Nov 2021, and since then no update. My husband wants to travel to his home country to go see his aged mother who is sick, but he has no GC to travel. We didn't apply for AP because we didn't think the GC will delay to this extent. I have tried calling USCIS but the automated system won't let me speak with a live agent. I have also contacted my Congressman office, they have sent a message to USCIS twice still no movement. We are not sure what else to do to get the GC approved so my husband can go see his sick mother. Does anyone have a trick to get live agent on phone? Also, any suggestions on what we need to do about our case? Thank you in advance for your response.