Mexican nationals in Arizona who need more information or have concerns about the bill can contact the consulate's call center, established to take complaints and to help its citizens, said Julian Etienne, a spokesman with the Mexican Consulate in Tucson.

The center was created in December 2008 as the Mexican government cited concerns about what it called a growing anti-immigrant climate in Arizona.

Call-center operators provide live service 24 hours a day, seven days a week, and they are trained to direct a caller's concern to the appropriate official at the correct Mexican Consulate in Arizona.

Although the consulates haven't released a statement with their stance about the new law, the Mexican ambassador in the U.S., Arturo Sarukhan, asked diplomats in Arizona to be on the lookout for abuse. The call center number is 1-877-632-6678

Mariana Alvarado