Recently I have been to Baltimore District Office to collect my interim EAD, I was told that if INS Processing Center(Vermont) requested some additional documentation, that requested documentation should be sent to Vermont(that information should be updated in INS database), then only they can issue interim EAD. They are taking 30 days to issue Interim EAD.
I walked in to the Detroit USCIS Center on Monday Sept 9th 2003 at 11:30pm. They gave me the waiting number & gave me an application form for Employment Authorization. At around 3:00 pm the duty officer wanted receipt notices (over 90-day proof), the original I-765 application, I-94 & driving licence (proof of picture ID). She asked me to get photo copies of each of these documents, which I got it immediately for her. After an hour someone called my name and took my picture and provided the card good for 6 months.
When an I-485 is accepted at the Service Center, requests for FD-258 FBI fingerprint checks, fingerprint fees, and G-325A consular background checks are made by USCIS. Responses to these requests come back to USCIS and must be matched up with the appropriate files held in staging. File Maintenance "file connects" these responses to the corresponding files.
My wife and I had our passports stamped after a 6 hour ordeal that started at 8:30 a.m. and ended at 2:30 p.m. Here are some tips based on what we experienced,
1. For an 8:40 appointment, get there before 8 if at all possible. They were not checking appointment timings, so people with 9/10 a.m. appointments were ahead of us in the line. All they care is that you have an appointment for that day.