The least responsible person for Saddam's existence is President Bush. Without his leadership, he'd be stronger than ever, and Bush did everything he possibly could to remove him from power and force.
No, Pres. Bush is the last person I would blame for Saddam.
I blame the Mid-East nations that told former Pres. Bush that they would pull their support should he order that the troops go into Baghdad. I believe we would have gone but without the airports and resources that we were getting from the surrounding countries, we might've lost a lot of lives and not been able to complete the job.