You just can’t walk up to people with brown skin and say give me your papers,’ a federal judge told Border Patrol attorneys at a hearing challenging recent immigration sweeps.

Border Patrol agents carried out sweeps in California’s Central Valley. Lawyers argued that people were stopped and arrested based on their skin color.

A federal judge in California has barred Border Patrol agents from arresting someone suspected of living in the U.S. illegally unless they have a warrant or a reason to believe the person might flee b