Arizona 's controversial immigration enforcement law takes effect Thursday . The measure will require police to check the legal status of anyone they stop, and it also requires officers to question people about their citizenship or immigration status. Those include a group of union members , students and religious leaders from Los Angeles . There are at least three court challenges to the law .
Arizona 's controversial immigration enforcement law takes effect Thursday . Many demonstrations are planned to protest the law . Those include a group of union members , students and religious leaders from Los Angeles . There are at least three court challenges to the law .