Since the terrorist attacks on September 11, 2001, Immigration and Customs Enforcement (ICE), along with its sister agencies, has become the largest law enforcement network in the country. But they often do not offer the same legal protections to detainees as for other criminals. That's according to a year-long investigation conducted by the Boston Globe into the inner-workings of ICE. The investigation also found that detainees whose home countries reject them are frequently put back on the streets, even in cases involving criminals who have been convicted of murder or rape. And because of the culture of secrecy within ICE, neither the public nor their victims are notified. Boston Globe reporter  Maria Sacchetti  is  on the team behind the three-part investigation.