I am in I-485 pending (EB1), and using my EAD, which is expired in last month. I am using interim EAD and will be expired two months later. I filed my renewal application for EAD 6 months ago in Nebraska, but I was informed that my case was still in waiting for review. I call service center many times, and seemed no use. More, local INS won't extend my interim. What should I do? THX!!!!