U.S. Immigration and Customs Enforcement (ICE) contracts with 106 detention facilities to detain removable aliens. In FY 2017, these 106 facilities held an average daily population of more than 25,000 detainees. Since the beginning of FY 2016, ICE has paid more than $3 billion to the contractors operating these 106 facilities. Despite documentation of thousands of deficiencies and instances of serious harm to detainees that occurred at these detention facilities, ICE rarely imposed financial penalties. ICE should ensure that detention contracts include terms that permit ICE to hold contractors to performance standards and impose penalties when those standards are not maintained.