Diamond dust, why should we try these prisoners? First of all, they're not US citizens. By "trying them in court", they would have the right to ask for classified information that could seriously hamper or compromise intelligence sources that we need. Second, they're almost all terrorists and have no uniform. Since they don't wear uniforms, they're little more than spies or guerillas and we're under no obligation under the Geneva Convention to extend those priveleges to them. Frankly, they're lucky we let them live.
Third, over 60% of the ones we're released end up being captured AGAIN engaging in terrorism. How many times do they need to be captured before we simply kill them?
Fourth, where do we send them once Gitmo is closed? Gitmo is like Club Med for many of these guys. Before we captured them, they were most likely eating bugs and living on the dirt, didn't get to bathe. They get three hots and a cot at Gitmo. Seldom get cold, get free healthcare, free smokes.
Fifth, by giving them "rights", they can drag on their cases like a 3 ring circus, expose our intelligence assets and possibly get our guys killed in the long run.
Frankly, what they ought to do, is waterboard them, then find out where their families live, take them to where ever that is, pin a note to their backs that "This is what happens when you mess with us" and drop them from a helicopter at 300 ft (no parachute) through the roof of their families home.
Then send the families a bill for the fuel we had to spend by dropping "Mohammed" off at home. If they don't pay, drop a 2000 lb smart bomb on their butts.
The point is, these people want to die. We need to help them.