Help!! how do credit charge offs/judgments impact work/student/immigration visa status?

Help! Questions regarding credit card charge offs and judgements. It is a bit complicated as I used to live and work in the U.S but have relocated to another country. I am not a U.S. citizen. (i studied and worked there for a while) I have multiple credit card charge offs that have large amount(over [...] http://bit.ly/oKBDZN