The Office of Refugee Resettlement (ORR) administers the Unaccompanied Alien Children (UAC) program. ORR uses the program's $1.4 billion annual budget to pay grantees to run facilities that serve unaccompanied children. Facilities deliver services that include housing, food, clothing, medical care, mental health services, and other related services to unaccompanied children in ORR care. Since responsibility for unaccompanied children was transferred to HHS by the Homeland Security Act of 2002, HHS-OIG has provided oversight of the UAC program. Given the urgency and seriousness of the health and safety issues raised in 2018 at UAC facilities, OIG responded quickly, dedicating an unprecedented level of resources to conduct large, multi-faceted reviews. In just three weeks, more than 200 OIG staff completed multi-day site visits to 45 ORR-funded facilities across the country.