Giving sanctuary to undocumented immigrants doesn’t threaten public safety—it increases it

"President Trump’s executive order seeking to halt federal funding to sanctuary cities contends that the main function of such jurisdictions is to protect 'criminal aliens' from deportation, and warns ominously of a 'public safety threat.' The order also would have us believe that public safety would be enhanced if we expanded efforts to remove undocumented immigrants by enlisting local police in a mass deportation campaign."