I would say that the hearings in regards to 9/11 and Guantanamo Bay have indeed been a failure. The reason being is because that facility is still open to this day. It should have been closed a long time ago, and yet that has still not taken place, that's for sure.
The 9/11 hearings at Guantanamo Bay have been massive failures because they have only further damaged the reputation of the United States of America. The torture and murders are not worth it even if the hearings resulted in the capture of all the men who caused the attack. Guantanamo Bay should be closed down all together.
As long as Guantanamo Bay detention facility remains open, then we have a problem. The hearings haven't accomplished much of anything. The base is still open. Due process hasn't been given to any detainees, and it's still legal to detain these people without trial for as long as the government decides.
I don't think that the hearings in regards to 9/11 and our lovely little facility in Cuba have been a failure. These hearings cast a good light on what exactly it is that we are doing down south, and that can never be considered to be a bad thing, I say.
No, I believe that the 9/11 hearings at Guantanamo Bay have not been a failure. Although it's easy to criticize the government and the hearings saying that they were inefficient and held by a "kangaroo court" of sorts, this was clearly not the case, and though critics have been saying that these trials should have been held in civilian courts inside the United States, to do this would be to invite terrorism and higher the national security risk, which is absolutely unacceptable.