06/30/2010 06:28 pm ET Updated May 25, 2011

ACLU Arizona Travel Warning: Civil Liberties Group Urges Visitors To Avoid State

(AP) - The nation's top civil liberties group has issued travel warnings for Arizona, saying the state's new law cracking down on illegal immigrants could lead to racial profiling and warrantless arrests.

American Civil Liberties Union affiliates in Arizona, New Mexico and 26 other states put out the alerts on Wednesday. The Arizona chapter says they've received reports that law enforcement officers are already targeting some people even though the law doesn't go into effect until July 29.

The alerts are designed to teach people about their rights if they are stopped and questioned by police.

The law requires police to question a person's immigration status during legal encounters if they suspect they are an illegal immigrant.

Its backers say it prohibits racial profiling, something Governor Jan Brewer says she will not tolerate.