More disturbing details are emerging of how the president seems to regard the law as an optional obligation in the discharge of his duties. Please don't confuse my concerns with a belief that the president should be hampered in fighting terrorism. He shouldn't. We need his vigilance and energy. But there are also basic legal oversight provisions that help ensure that power is not abused; and that the public can have confidence in the president's war-making powers. This president, alas, has systematically ignored the legal safeguards - again in signing statements. Eric Umansky has the latest goods.