NPR piece on immigration.
The Arizona legislature passed a bill on a party line vote, and Republican Governor Janice Brewer signed it, making illegal immigration a state as well as federal crime and requiring Arizona police to require proof of citizenship if they have a "reasonable suspicion" that someone is in the country illegally.
It's a very complicated issue. On the one hand, I don't think it's right for pro immigrants' rights groups to go so far as to be pro illegal immigration. Some politicians have "urged the Obama administration not to cooperate when illegal immigrants are picked up by local police." I don't really understand why this is politically a good move. It seems like proponents of the bill would feel even more justified in supporting it.
Grijalva and civil rights activists promised to march in the streets and invite arrest by refusing to comply with the law.