Non-payment of child support or an order of maintenance can be enforced through the Court with contempt proceedings and in some circumstances, with a criminal prosecution. Parenting time enforcement is also a common item that may be brought before the Court with a citation in contempt. The Court has a wide variety of sanctions available for indirect contempt of Court, including monetary awards and jail time. Often the court will award attorney's fees to a party who needs to bring someone to Court with a citation in contempt. The reason being, but for the non-compliance of the offending party, we wouldn't be here.
Unless a Court specifically retains jurisdiction over a property disbursement matter in a divorce decree, it will normally lose jurisdiction after the time for appeal has run. If property is going to be disbursed in divorce more than 30 days after the Judge signs the decree (sale of marital home profits, 401k transfers, etc.) be sure to ask the Court to retain jurisdiction over these matters.