PHOENIX - A federal judge will hear arguments on July 22 whether to allow Arizona's new law aimed at illegal immigrants take effect.

U.S. District Court Judge Susan Bolton will consider a request by three civil-rights groups to put the law on hold while the issue of its legality is litigated. They argue the law unconstitutionally infringes on the exclusive right of the federal government to control immigration policy.

The statute, set to take effect July 29 unless blocked, requires police who stop people for another reason to check their immigration status if they reasonably believe the person is in this country illegally, and permits police to charge illegal immigrants with violating state trespassing laws.

Bolton will also consider arguments by Gov. Jan Brewer that the entire lawsuit should be thrown out because, her attorneys argue, "No part of SB 1070 addresses the admission, authorization or deportation of aliens from the United States.

Capitol Media Services