45 CFR §309.125

Federal funding of Tribal IV-D programs is based on information contained in the Tribal IV-D application. The application must include a proposed budget and a description of the nature and scope of the Tribal IV-D program and must give assurance that the program will be administered in conformity with applicable requirements of title IV-D of the Act, regulations contained in this part, and other official issuances of the Department that specifically state applicability to Tribal IV-D programs.