请问: USCIS电话客服里的人知道关于case的进展的情况会比网上显示的多而详细吗?

Answer: They should know more current progress than USCIS web site, but not really the real situation.

If you call the USCIS' National Customer Service Center (NCSC), you can ask the information officer for an update on processing times. These people do not have complete information, but you can ask for the date of cases being processed at that time.

About every two weeks, the USCIS information officers get an update of these dates, so you may get a good idea of processing times.  http://www.greencardapply.com/question/question.htm



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