Emphasis is mine
the law does not seek to regulate immigration but merely adds state penalties for what are already federal crimes.
Under the legal doctrine of "concurrent enforcement," he said, states are allowed to ban what is already prohibited by federal law. As an example, he said, the courts have upheld efforts by California, Arizona and other states to enact sanctions against employers who hire illegal migrants.
Kobach, who is running as a Republican candidate for Kansas secretary of state, said he took care to include an explicit ban on using "race, color or national origin" as the sole basis for stopping someone to ask for papers.
from LA Times
This is the end statement to a discussion I was having on twitter regarding Arizona's new immigration law and California's call for a boycott of that state (below is a sample of responses, I got more in-depth with some people).
Apparently my statement was too long for twitlonger.com:
For the record I am for immigration reform. Is AZ doing it right? I don't know, but they are at least doing something. Regarding CA politicians calling for a boycott of AZ I think is absolutely ridiculous and a further waste of taxpayer time and money. Fix our state before complaining about the immigration policies of other states. As an American you can *choose* where you live. If you don't like AZ's policy, don't move there. #thatisall