Four years ago George W. Bush used to call him "the shadow" and promised a fresh start by pledging to "uphold the honor and dignity" of the presidency. He even joked to late-night TV's David Letterman that one of his top 10 priorities in the White House would be to give the Oval Office "one heck of a scrubbing." But when President Bush welcomed Bill Clinton into that same office last week, those barbs were ancient history. After Clinton remarked how much he liked the new Oval Office rug, Bush encouraged him to praise his interior designer-Laura. (He did.) Over...