Southwest Border: Actions Needed to Improve DHS Processing of Families and Coordination Between DHS and HHS, Report to Congressional Requesters [open pdf - 9MB]
From What GAO [Government Accountability Office] Found: "Data from the Department of Homeland Security's (DHS) U.S. Customs and Border Protection (CBP) indicate that apprehensions of family unit members (noncitizen children under 18 and their parents or legal guardians) grew from about 22 percent of total southwest border apprehensions in fiscal year 2016 to about 51 percent of such apprehensions during the first two quarters of fiscal year 2019--the most current data available. During this period, CBP data indicated that most apprehensions of family units--about 76 percent--occurred between ports of entry by the U.S. Border Patrol (Border Patrol). With regard to family separations, from April 2018 through March 2019, CBP data indicate it separated at least 2,700 children from their parents, processing them as unaccompanied alien children (UAC) and transferring them to the Department of Health and Human Services (HHS)."
Government Accountability Office: http://www.gao.gov/