The Supreme Court ruled on Thursday that President Bush did not have authority to set up the war crimes tribunals at Guantanamo Bay, Cuba, and found the "military commissions" illegal under both military justice law and the Geneva convention.
http://www.scotusblog.com/...
The vote was 5-3, with the Chief Justice not taking part.
"The Court expressly declared that it was not questioning the government's power to hold Salim Ahmed Hamdan "for the duration of active hostilities" to prevent harm to innocent civilians. But, it said, "in undertaking to try Hamdan and subject him to criminal punishment, the Executive is bound to comply with the Rule of Law that prevails in this jurisdiction."
That quotation was from the main opinion, written by Justice John Paul Stevens. That opinion was supported in full by Justices Stephen G. Breyer, Ruth Bader Ginsburg and David H. Souter. Justice Anthony M. Kennedy wrote separately, in an opinion partly joined by Justices Breyer, Ginsburg and Souter. Kennedy's opinion did not support all of Stevens' discussion of the Geneva Convention, but he did find that the commissions were not authorized by military law or that Convention.
Justices Samuel A. Alito, Jr., Antonin Scalia and Clarence Thomas, the dissenters, each wrote an opinion."