The Center for Immigration Studies (CIS) notes that sanctuary jurisdictions are releasing alien gang members rather than turning them over to Immigration and Customs Enforcement (ICE) for deportation. CIS states:
“According to ICE statistics provided to the Senate Judiciary Committee, over a nine-month period in FY2017, 142 gang members that ICE was seeking to deport were released by the local law enforcement agency instead of transferred to ICE custody. Two-thirds of the releases occurred in California, which has had a strict sanctuary policy in effect since January 2014. Fifteen of the aliens were members of the MS-13 gang and 127 were members of other gangs.”
Read more at cis.org.