Among other things, the measure would prohibit the transfer of prisoners at the military base in Guantanamo Bay, Cuba, to the United States or other countries.
The Pentagon did not release the names of the accused, or any charges against them, but the families of two British prisoners and one Australian held at the American naval base at Cuba's Guantanamo Bay were told by their governments that their sons were among the six deemed eligible for trial.
Walker, 20, who was captured last month at a fortress holding Taliban prisoners near Mazar-e Sharif in northern Afghanistan, was questioned at a U.S. Marine Corps base near Kandahar, where he is being held.