Score one for the Supreme Court.
"In a 5-3 decision this morning (Hamdan v. Rumsfeld), the United States Supreme Court ruled that neither Congress's post-9/11 Authorization for the Use of Military Force, the Uniform Code of Military Justice (UCMJ), nor the inherent powers of the President gave the President the authoirty to establish military tribunals on Guantanamo Bay to try and convict alleged enemy combatants in the war on terror. The Court found the commissions illegal under both military justice law and the Geneva Convention." (KOS)
The Opinion (PDF)