Eight Mexican senators took a fact-finding trip to Arizona concerning the state's new immigration law and met with invited business officials who mostly oppose the law.
The law doesn't take effect until July 29, but Sen. Silvano Aureoles of the central state of Michoacan says it's already spreading fear among Mexicans that they could be stopped by police based on their appearance and then arrested.
Arizona's new law makes it a state crime to be in the country illegally. Aureoles says Mexican officials are preparing in case the law drives large numbers of Mexicans living in Arizona back to Mexico.
The senators attending Tuesday's meeting in Phoenix were from eight Mexican states including Baja California, Zacatecas, Guanajuato, Sonora and Coahuila.