1) Iraq had chemical weapons because they used it on the Kurds murdering hundreds…isn’t this weapons of mass destruction?
2) Sadaam said he had WMD's and wouldn't let the inspectors come in to check it out so why wouldn't we believe him?
3) His regime was killing and raping families (including boys and men), who were said to oppose him.
4) His sons were raping women and little girls at will.
One other thing to think about is we were more concerned about oil at that time so anything or anyone that destabilized the region was of great concern to the U.S. Now the Middle-East doesn't have the leverage it had which would change whether or not we'd engage our troops. Should we have gone in, you decide but there's always more to the story than what you hear from some politicians.