According to old post by xiaobaitu, Generally code 2 means NC cl

回答: I am nott sure, but I called USCIS several times,高地2007-04-29 17:41:36

see this link :
http://web.wenxuecity.com/BBSView.php?SubID=immigration&MsgID=232989


Anyway, good luck to all of us !

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