D.C. is set to cooperate more closely with ICE. Could other 'sanctuary cities' do the same?

DC police have just made it easier for ICE to track undocumented immigrants in the city. The chief of police here signed an executive order on Thursday telling its officers to notify ICE and provide information on undocumented immigrants they encounter, even at traffic stops. That essentially paves the way for their arrest or even deportation.Cooperating with ICE this way means DC is not a sanctuary city. That's a place that keeps its officers from providing information about undocumented immigrants they ma ...