The purpose of this legislation, known as the Increasing Access to Foster Care Through Age 21 Act, is to encourage states to provide extended support and services to young people in foster care up to the age of 21. It also allows these young individuals to return to foster care after turning 18, regardless of their parents' financial eligibility for assistance programs. Key provisions of the law include changes to existing definitions and requirements for foster care. States are given the option to extend foster care services to youth who are 18 to 22 years old.