我一月份打电话换地址,接线员主动帮我查STATUS,顺便也查了我先生的.但我很快就收到信了,告诉我正在BACKGROUND CHECK, 可先生的信一直没到.上网一查,上边写道. On March 14, 2006, we responded to your request for more information concerning your case. If you have not received our response within 30 days from this date, please call customer service at 1-800-375-5283.一个月早过去了,这几天打电话,连着三四天都告诉无法access this case,但网上可以打开呀,请问这是怎么回事?会不会上次的信要他补什么材料,而我们一直没理,给CLOSE 了.很着急,请有经验的朋友帮帮忙,多谢了.