What I have heard, a guy from Pakistan had the same case. He was deported for DWI. He was studying at Southern Louisiana University at Hammond , LA.  During his stay at Pakistan , he sent a letter to the senator of Lousiana seeking to help him finish his degree. The Senator did not reply for a month but when the pakistani contacted him again, The secretary of Senator told him they are working on it .

The pakistani got a mail  back home saying he can apply for visa. Than he came witha new visa and he was given clear on his charges and was not even presented on the court. However he paid a fee of 1000 to the Department of Public safety louisana .

I can give his contact details if you guys want to contact him.