First of all I don't think any tribunal will ever be convened within the continental US. Second, it allows sensitive intelligence used as evidence to remain secret. The WTC bombing trials and the public disclosure of sources and sensitive intelligence gathering techniques was a disaster. For one it stopped Bin Laden from using his satellite phones when it was brought out that his calls were being monitored. When I say secret I don't mean secret from the accused or his lawyer just from the NYT and Washington Post. It does not hold the potential of jurors being threatened or the families being put in danger and yes it does not require the same level of "proof" to gain a conviction. I am also bothered that a conviction cannot be appealed to the Supreme Court directly. I am not so sure that that will not be challenged and the process amended.