急切求助關於我兒子綠卡

各位大俠好，

於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.

我們是否可以告移民局？您能否給我們盡量詳細的關於如何告他們，如程序如何，填什麽表。

這裏，我們全家萬分感激您的幫助！