The same thing! I think security checks these days are taking very long time and keep going into endless loop until someone pulls your case out of that loop, and thats what might have happened when the congressman office intervened in your case. I think you may hear something soon. Try to contact the congressman office again, but don't be pushy. Also, keep your eyes on the online case status tool and subscribe to email and sms updates, so when there is an update on your case you will get notified promptly.