A federal judge is considering whether to block the first Guantanamo Bay war crimes trial from beginning next week. If he does, it could throw another kink into the Bush administration’s legal strategy to fight terrorism.

Salim Hamdan, a former driver for Osama bin Laden, is scheduled to go on trial Monday as the first defendant in a special military commission system set up to prosecute detainees at the Navy base in Cuba. Other detainees, including alleged Sept. 11 mastermind Khalid Sheikh Mohammed, are awaiting trials of their own.