Here’s the problem: Sending our troops to Iraq was not something he needed permission to do; under the War Powers Resolution, the entire “war” was legal. Therefore, using the fact that he lied about the reasoning/impetus as the linchpin for an impeachment fails on cause grounds. And you can’t impeach a President “just” for lying; they lie every day. They call it “disinformation for national security reasons.” What should happen is that whomever runs against Bush in 2004 hammer this issue and hammer it again and again and again until it’s as flat as Grandma’s flapjacks, and as tasty.