Were we, or were we not, lied into this war?
Depends on how you want to look at it. Our leaders didn't lie, they went on the best information available and democrats and republicans reached the same conclusion.
However, if you want to look at where the information came from, it wouldn't surprise me if Chalabi's crew fed back intel into our system in order to drive momentum for the invasion.
Regardless, we're long past arguing whether or not the invasion was "right" or "wrong". We have a mission to complete, and a lot of brave fighters to support.