For people whose child support account is in arrears, Albany, GA has devised a Parental Accountability Court to help them get back on track.
This court is not punitive. Rather, it helps to remove obstacles to parents paying child support, such as unemployment, addictions, mental health issues, etc.
This is just a small pilot program right now but it sounds promising.
Read more in this Albany Herald article: New Parental Accountability Court Aims to help dads catch up on child support payments .