Civil rights activists warn that Arizona is inviting rampant racial profiling and police state tactics if it enacts what would be the toughest law in the nation against illegal immigration.
The measure on the verge of approval in the Legislature would make it a crime to be in the country illegally. It also requires police to question people about their immigration status if there's reason to believe they're in the country illegally.
The American Civil Liberties Union of Arizona says the measure, which it calls "an unprecedented expansion of police power," gives police a "green light to harass anyone who looks or sounds foreign."
The ACLU and immigrant rights groups are urging Republican Gov. Jan Brewer to veto it.
Anti-immigration activists say the goal is to discourage illegal immigration by making the U.S. inhospitable.