The biggest issue i have with this is that (at least up in the NE) I'm not hearing anything from the people in Arizona outside of politicians. I know of many of the factors which have brought the situation to this point, but I know nothing of the evolution of the mindset of the people who have passed this law. It makes me wonder who supports it. Oddly enough, the most vocal proponents of it here that i know are recent immigrants who worked very hard and are very pissed that some people cheat the system and not work for it like they did.
There are huge numbers of "immigrants" in eastern Mass, and the huge majority of them are working hard and providing services that the lazy suburbanites can't be bothered to do. They follow the rules, and take advantage of every single social benefit they can. It's not greed, it's smart. Working together to help everyone is a community value that this country has largely abandoned, many of them embrace it. Sure there are some bad people in that group, but you get that in any social sampling. The folks I see now are no different from those in any other wave of immigration that has come to this country.
I can't imagine a law like this here, it just would not happen. I'm certain the profiling and stereotyping exist, there's no question about that. But putting it in writing, making it official? No way. There are areas where not being white makes you suspicious to the fuzz, and driving a lowered riced out honda WILL get you pulled over in many places, but you're not getting yanked out of your car on rt 1 and having someone demand your papers just because you look different.
Do check your bulbs before you visit tho ;)