; (B) simplifying and improving reporting related to paragraphs (34) and (35) of section 471(a) regarding children or youth who have been identified as being a sex trafficking victim or children missing from foster care; and (C) improving the ability of States to quickly comply with background check requirements of section 471(a)(20), including checks of child abuse and neglect registries as required by section 471(a)(20)(B). . (c) Reservation of funds To improve the interstate placement of children Section 437(b) of such Act ( 42 U.S.C. 629g(b) ) is amended by adding at the end the following: (4) Improving the interstate placement of children The Secretary shall reserve $5,000,000 of the amount made available for fiscal year 2017 for grants under subsection (g), and the amount so reserved shall remain available through fiscal year 2021. . 123. Enhancements to grants to improve well-being of families affected by substance abuse Section 437(f) of the Social Security Act ( 42 U.S.C. 629g(f) ) is amended— (1) in the subsection heading, by striking increase the well-Being of, and To improve the permanency outcomes for, children affected by and inserting implement IV–E prevention services, and improve the well-Being of, and improve permanency outcomes for, children and families affected by heroin, opioids, and other