Torture and Detained – Survivors of the U.S. Detention Centers
Quite a long document but it is very thorough. This is put together by “The Center for Victims of Torture (CVT)” and it includes several first hand accounts from people that sought help but instead were met with hostility and aggression at the border and in detention centers. The focus is on the experience of torture survivors.
http://www.uusc.org/sites/default/files/report_torturedanddetained_nov2013.pdf