I would say that as a general rule that any law that gives your avg street cop a "reason" to stop someone, especially when he only needs suspicion they're "illegal", will find support among the guys on the street.
Yes. And more right to carry gun laws are gonna cause crime to go up. The officers did not want the right to just stop anyone and inquire of their legal status. They wanted to have the right to just ask if they are legal. There was such a fear of being sued, that many districts would not even allow the officer to ASK for legality of residence. Guys were in jail for murder and rape and no one was allowed to ask if they were legal. This law gives the officers the right to inquire legal status without getting accused of JUST harassing.
I don't think we'll see the abuse that folks are scared of. But I do think we'll see an increase in illegal alien arrests. And we should. If a person is legally in this country, then that person has no reason to be scared. If you are a law abiding citizen doing good things for the community, then you should not have to worry. If you break the law, then expect to show ID. If you are in the area of a police presence, then expect to show ID. I do this already and I am as legal as they come.
The fear of high speed police chases and home storm trooping "just because the guy was brown", will not come to pass.