Trump Administration's 'Zero Tolerance' Immigration Enforcement Policy [Updated February 26, 2019] [open pdf - 1MB]
From the Document, "For the last several years, Central American migrant families have arrived at the U.S.-Mexico border in relatively large numbers, many seeking asylum. While some request asylum at U.S. ports of entry, others do so after entering the United States 'without inspection' (i.e., illegally) between U.S. ports of entry. On May 7, 2018, the Department of Justice (DOJ) implemented a 'zero tolerance' policy toward illegal border crossing both to discourage illegal migration into the United States and to reduce the burden of processing asylum claims that Administration officials contend are often fraudulent. Under the zero tolerance policy, DOJ prosecuted all adult aliens apprehended crossing the border illegally, with no exception for asylum seekers or those with minor children. DOJ's policy represented a change in the level of enforcement of an existing statute rather than a change in statute or regulation. Prior Administrations prosecuted illegal border crossings relatively infrequently."
CRS Report for Congress, R45266
Congressional Research Service: https://crsreports.congress.gov/