回复：应该去哪个移民中心查案子？

All the marriage cases should be sent to Lee's Summit, MO. The national benefit center. Be patient, I filed last Dec, and i had my AP(late Feb), EAD (mid Mar) and FP (code 2 & 3) done by the April 10. Make sure you will receive the receipts!! or call them the 1800 number or visit your local INS. It seems that visiting is better than calling.

I talked to other people like me, and it approximately took about 5-6 months to get the interview done and 1 week? to receive GC.

Good luck.