Brewer, a Republican, has not taken a public stance on the bill. She replaced Janet Napolitano, a Democrat who became President Obama's Homeland Security chief last year. Napolitano had vetoed similar bills in the past. Brewer faces a primary challenge next month; most observers expect her to sign the measure.
Some Republicans have privately complained about the bill, which Pearce has been pushing for several years, but were loath to vote against it in an election year. The House was scheduled to approve it last week but the vote was delayed until Tuesday to give sponsors a chance to round up enough votes. It picked up steam after the killing late last month of a rancher on the Arizona side of the Mexican border. Footprints from the crime scene led back to Mexico.
