各位大侠好，
于2007元月，we filed I-90 to correct the mistake made by USCIS on my son's green card. his case has not been updated since that time. during this long time, we made two appointment with immigration officer by infobypass and made numerous call to USCIS and asked help from congress man and first lady.
all did not work. There has not been any progress for my son's case.
normally, correction the mistake made by USCIS just need a few months.
我们是否可以告移民局？您能否给我们尽量详细的关于如何告他们，如程序如何，填什么表。
这里，我们全家万分感激您的帮助！