“[U.S. Customs and Border Protection] has reunited 522 Unaccompanied Alien Children (UAC) in their custody who were separated from adults as part of the Zero Tolerance initiative. …There is a central database which HHS and DHS can access and update when a parent(s) or minor(s) location information changes….As of June 20th HHS has 2,053 separated minors being cared for in HHS funded facilities.”