 The judge can incarcerate the obligor for contempt of court for some time, presumably till the balance is brought current, similar to debtors' prisons of prior eras.Jail complicates child support payments, which is why some states suspend sentences and impose a probationary period during which payments must be made and/or employment searches conducted, with jail reserved for uncooperative offenders.Paternity questions which complicate the issue of child support can be due to incorrect information, fraudulent intent, or default judgements.