I really don't want to be part of a Gitmo discussion because for the last year, I have been trying to put Gitmo out of my mind. Nevertheless, there is so much misinformation floating around here that I will chime in for just one post. I was one of those dastardly lawyers involved in the ABA's Task Force for the Guantanamo Detainees so I have more than a little experience with it.
The Bush Admin did NOT release 522 detainees. They were released by the CSRTs [Combatant Status Review Tribunals] also known as the Military Tribunals. Most were released because there was not one shred of evidence showing that they had been involved in any act of aggression against the USA and they were NOT caught on any battlefield. Many of those released were turned in by bounty hunters who received a handsome reward for bringing in "terrorists" and basically, the USA was duped out of several million in reward money. The majority of people caught on battlefields are being held in two prisons in Afghanistan, not at Gitmo. The primary prison is at Bagram AFB in Afghanistan. Some of those released did become terrorists. I would too if the USA held me for 5 or 6 years in Gitmo without any evidence against me, no contact with my family, and putting me on a waterboard. Some of the Gitmo detainees were terrorists and they do have evidence against them. They are still in Gitmo. But, since Gitmo is now American soil, they will get trials here.
Constitutional rights apply to any person, not just American citizens, held on American soil. The argument before SCOTUS in Boumedienne was whether Gitmo was American soil since we only leased the ground. SCOTUS determined that it was American soil. There is a long legal history behind the application of constitutional rights in war time. People being held outside the USA, such as in Bagram Prison, are not now, and never will be, entitled to those rights. The Bush Admin classified these people as "enemy combatants" rather than POWs, because that enabled them to avoid the protections of the Geneva Convention. They are still classified as enemy combatants, rather than POWs, and they do not get Geneva Convention benefits.
Now I will bow out of this discussion and you people can decide the fate of the remaining detainees without my input.