The Flores v. Reno Settlement Agreement governs the policy for the treatment of unaccompanied alien children in federal custody. Unaccompanied alien children are minors less than 18 years old who arrive in the United States without a parent or legal guardian and are in the temporary custody of federal authorities because of their immigration status. The Department of Homeland Security is bound by the Flores V. Reno Settlement Agreement, which includes requirements that immigration officials detaining minors provide (1) food and drinking water, (2) medical assistance in the event of emergencies, (3) toilets and sinks, (4) adequate temperature control and ventilation, (5) adequate supervision to protect minors from others, and (6) separation from unrelated adults whenever possible.