Child care services, enabling parents to commit themselves to paid employment while providing a supervised environment for their children, have a long and complex history in the United States. Child care services can provide children with educational and other advantages, as well as custodial care. In fact, the United States has multiple kinds of services providing child care and early childhood education. Publicly funded services have concentrated on care for impoverished children and those facing other risks or disadvantages, but many of these children and their families remain unserved because of gaps in programs and lack of support for subsidies, while other families purchase the services they need.