Senator Lindsey Graham often plays the contrarian, the conservative Republican willing to poke a stick in the eye of the White House. Mr. Graham advocates using the existing court-martial system as the basis for trying suspects, a position that has drawn fire from many other Republicans. Last year, against the wishes of the Bush administration, he was one of the key forces in helping pass a ban on torture. While some other Republicans argue that terrorists do not deserve legal or human rights, Mr. Graham has insisted that only a system grounded in the fundamental rights of the military code...