In fact, immigrants commit fewer crimes than the native- born: Only 820,000 of the 11 million undocumented have any criminal record, and only 690,000 have committed serious crimes. The Obama administration relied heavily on local cooperation to apprehend the latter, but many of these communities are now in sanctuary cities. They will certainly not cooperate, which poses what one Immigration and Customs Enforcement supervisor calls "perhaps [the] biggest challenge" for the agency.
less crime so their sending their good people?