Sorry but Saddam was the lesser of the multiple evils in retrospect. The Kurds love us for taking him out and yes he gassed them as an evil man. But we had Saddam bottled up and the real culprit outside of Al_Quada was and is Iran.
Not to sound like a rotgut Dem but going into Iraq to remove Saddam was a mistake. You think this is now a better current outcome with ISIS? What if Iran jumps in and gobbles up Iraq now? Entirely possible.
The First Gulf War was a mistake.
But once it happened, taking him out was the only course.