CNN/Opinion Research Corp. : Travel alerts inform people of their rights when stopped by law enforcement . Brewer says police can ask the residency status of people being investigated for a crime . ACLU says it 's concerned that officers will enforce law before this Fourth of July holiday weekend effective date . CNN/Opinion Research Corp. poll : 37 percent of those surveyed favor New York law .
ACLU : Travel alerts inform people of their rights when stopped by law enforcement . Law says police can ask the residency status of people being investigated for a crime . ACLU says it 's concerned that officers will enforce law before July 29 effective date . CNN/Opinion Research Corp. poll : 57 percent of those surveyed favor Arizona law .