When it comes to Bush, we can all agree that he has done nothing to improve the Country. That should be the goal of every man who ever held the office of President, but many have not measured up.
So where does that leave Bush? Somewhere on the bottom end of mediocre. That Axis of Evil speech he gave early in the first term could have led to an even bigger war. If it had, then yes, he would be the worst president EVER! Imagine fighting a war in Iraq, Iran, Israel, Afghanistan, Turkey, and North/South Korea. It could have happened.