Child Support and Immigration what can be done?

Hello I am writing to find out if there is anything that can be done to help my father. My father is a native of Haiti but has been in the US for many years. He became a citizen in 2004. Also in that year his passport was taken due to owing back child support in the amount of $14,000. Since that time he has paid and now owes only $6,000. My Father would like to go home to Haiti, to visit his sick and dying mother and father. My question is if there is anyway that the government can grant him some kind of temporary status/passport that he may be able to visit his mom and dad? Or if there is really anything that we can do? PS.We have asked the family at home to send any information to my father that can show that his mom and dad are very sick.