Not to nitpick, but a VERY easy mistake to point out is claiming that there were WMD's in Iraq.
Maybe not by the time America stepped in (even though that's questionable, as well), but Iraq certainly had weapons of mass destruction up untill not so long ago. The last report of such weapons, made by UN inspectors (or some-such, maybe covert operatives instead) was in 1998. Let's not forget that in the 1980s Saddam used those WMDs, too.

Another, more serious claim is the fact that Iraq is becoming more stable day by day and it's a matter of time before we install a democracy there when the truth is almost the exact opposite.
The mere notion that America will be able to instill democratic values and regime in Iraq (or any other Muslim nation, for that matter) makes me giggle like a bass-voiced schoolgirl.