There are prisoners in Guantanamo Bay that have not been tried, have no legal representation, their families cannot see them and are obviously kept in a strange land outside their own country. There is no international monitoring of their conditions and fate. No one knows whether they are prisoners, POWs, accused or criminals. European investigators have confirmed the existence of secret prisons in Europe too.
Paragraphs 6-7 - Letter to George W. Bush, 2006