Every year, Border Patrol detains tens of thousands of men, women, and children in its notorious “hieleras” (Spanish for “iceboxes”), where detainees are packed into freezing, dirty, and overcrowded cells, denied basic necessities, and held incommunicado for days at a time.  The ACLU is working to ensure detention conditions satisfy basic constitutional requirements, and that the agency treats all detainees with dignity and respect.