as far as weapons of mass destruction check with the Kurds on that, chemical warfare still qualifies for mass destruction. and any all wmd's probably went to cohorts like syria prior to us invasion.
The question is this, was Saddam a threat to the US or the middle East, that deemed it necessary for the invasion ?
I don't think you'll find much of an argument in support that he actually was.
He had been subdued and put under control during the first invasion.
The Americans spanked his ass well and he looked like he was going to be an insignificant threat.
If you were to ask the majority of the American people or the people of the allied countries if the
second invasion should have taken place, you find the answer to be a negative one.