今天等来的是 一封 additional review 的 信,
the status of this service request is:
Based on your request , we researched the status of this case, we are actively processing this case, However we have to perform additional review on this case and this has caused a longer processing time, If you do not receive a decision or other notice of action from us with 6 months of this letter, please contact customer service at the number provided below.

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我们等了8年, 想不通,到了排期还不批,现在好象已没有NC (name Check) 的问题了,
请教, 这是不是, 不好的兆头,还是USCIS 一般拖延借口, 象我们这种情况先例近来多不多?该做何准备...先,谢谢, 在线等..