No surprise, since Arizona Gov. Jan Brewer faces a tough primary challenge, but still disappointing: she has just announced her intention to sign SB 1070.

The soon-to-be law allows Arizona police to challenge anyone they think might be undocumented, and demand immigration papers.

It also allows residents to sue their municipalities if they believe local cops aren't doing enough to target and jail undocumented immigrants. You better believe that within a year, virtually every town and county in the state will be getting sued by xenophobic teabaggers.

Obama has already promised to monitor the situation closely for violations of civil rights, which are inevitable. And this new law will create additional impetus for a comprehensive national solution to the problem of undocumented workers in our country.

As for Arizona Republicans, they're about to learn what California Republicans learned after passage of Prop 187 -- alienating a substantial Latino community is bad for getting elected.