This report relates to the mistreatment and abuse that adult immigrant detainees suffer in United States detention facilities. It is submitted in response to the United States’ periodic report relating to the Convention Against Torture (CAT) and specifically addresses the deplorable conditions of detention, the use of solitary confinement, the problem of sexual violence in detention and the lack of investigation of such acts, the refoulement of detainees who face risk of torture, the enforcement of the non-derogable prohibition of torture, and the prevention of cruel, inhuman or degrading treatment or punishment. This report discusses current practices of the U.S. Immigration and Custom Enforcement detention and the impact they have on immigrant detainees as it relates to the United States’ obligations under the CAT. It urges the United States to comply with the CAT by providing humane detention conditions, exploring alternatives to detention, taking steps to prevent sexual assault in detention facilities, providing access to legal counsel, and actively screening for asylum eligibility.