The military tribunal verdict convicting Salim Hamdan of providing material support to terrorism was eminently just. The guy was, after all, Osama Bin Laden's driver, and he was, after all, arrested with two surface-to-air missiles in the back of his car. And there was, after all, the video of a 1998 Al Qaeda news conference for Pakistani journalists that at one point showed Hamdan with a machine gun and at another juncture captured him smiling at Bin Laden. And there were, after all, the undisputed facts that Hamdan fell in with Bin Laden in 1996 and worked with him through...