and other legal personnel in child welfare cases Section 438(b)(1) of such Act ( 42 U.S.C. 629h(b)(1) ) is amended in the matter preceding subparagraph (A) by inserting shall provide for the training of judges, attorneys, and other legal personnel in child welfare cases on Federal child welfare policies and payment limitations with respect to children in foster care who are placed in settings that are not a foster family home, after with respect to the child, . (d) Assurance of nonimpact on juvenile justice system (1) State plan requirement Section 471(a) of such Act ( 42 U.S.C. 671(a) ), as amended by section 131, is further amended by adding at the end the following: (37) includes a certification that, in response to the limitation imposed under section 472(k) with respect to foster care maintenance payments made on behalf of any child who is placed in a setting that is not a foster family home, the State will not enact or advance policies or practices that would result in a significant increase in the population of youth in the State’s juvenile justice system. . (2) GAO study and report The Comptroller General of the United States shall evaluate the impact, if any, on State juvenile justice systems of the limitation imposed under section 472(k) of the Social Security Act (as added by section 201(a)(1)) on foster care maintenance payments made on behalf of any child who is placed in a setting that is not a foster family home, in accordance with the amendments made by subsections (a) and (b) of this section. In particular, the Comptroller General shall evaluate the extent to which children in foster care who also are subject to the juvenile justice system of the State are placed in a facility under the jurisdiction of the juvenile justice system and whether the lack of available congregate care placements under the jurisdiction of the child welfare systems is a contributing factor to that result. Not later than December 31, 2023, the Comptroller General shall submit to Congress a report on the results of the