stkpwhraou during our exclusive look behind bars where detainees await deportation hearings, some of the changes are already in place. an ice administrator telling us, keeping detainees calm and healthy helped prevent disturbances. here, there's arts and crafts and even special meals. and soon, these partitions and visitor -- visiting rooms could be gone an overnight leave could be allowed on holidays. advocates for illegal imtkpwrapblts argue these changes aren't enough. >> some of them actually will make a significant difference in the living conditions of the detainees who i have to remind everyone are not criminals. >> the president of the union representing ice officers says many of the detainees have committed crimes in addition to entering the country illegally. >> we have to take every precaution possible to make sure that they are safe and that our employees and officers inside these facilities are safe. >> reporter: ice works in tandem with the corrections corporation of america.