Amends part B (Child and Family Services) of title IV of the Social Security Act to make it a purpose of the Stephanie Tubbs Jones Child Welfare Services Program to promote efforts to prevent children from entering the foster care system through the provision of pre- and post-adoptive support services. Extends adoption promotion and support services to those designed to support adoptions from other countries as well as domestic adoptions. Specifies related pre- and post-adoptive support services. Amends SSA title IV part E (Foster Care and Adoption Assistance) to revise requirements for state expenditures for adoption support services. Amends the Public Health Service Act to direct the Secretary of Health and Human Services (HHS), acting through the Administrator of the Substance Abuse and Mental Health Services Administration, to award grants or cooperative agreements to eligible entities to develop and implement statewide or tribal post-adoption mental health service programs for all adopted children. Amends SSA title IV part D (Child Support and Establishment of Paternity) to direct the Secretary, as part of the child support and paternity data collection system, to promulgate final regulations requiring the states to collect and report information regarding children adopted within the United States or from other countries who enter into state custody as a result of the disruption of a placement for adoption or the dissolution of an adoption. Directs the Comptroller General (GAO) to report to Congress on how children are advertised for adoption, prospective parents, and support for adopting families.