The White House suffered an embarrassing setback in its effort to try detainees at Guantánamo Bay on Monday when military judges threw out all charges against the first two prisoners to come before the newly-constituted commission.

Two judges, ruling in two separate cases, dismissed all charges against Omar Khadr, a 20-year-old Canadian who has been held at Guantánamo for five years, because the court did not have jurisdiction to try “enemy combatants.” A judge also threw out the case against Salim Ahmed Hamdan, a former driver for Osama bin Laden.