Stupid is as stupid does, & this is stupid, dumb, risky, & no upside Obama. You're killing Democrats: Justice Dept. Will Fight Arizona on Immigration

From The New York Times:

The Obama administration has decided to file a lawsuit to strike down a new Arizona law aimed at deporting illegal immigrants, thrusting itself into the fierce national debate over how the United States should enforce immigration policies.

The federal government only occasionally intervenes forcefully in a state’s affairs, and it carries significant political risks. With immigration continuing to be a hot issue in political campaigns across the country, the Arizona law, which grants the local police greater authority to check the legal status of people they stop, has become a rallying cry for the Tea Party and other conservative groups.

At home, polls show that a majority of Americans support the law, or at least the idea of states more rigorously enforcing immigration laws.