And few Democrats questioned whether the al-Qaida-affiliated terrorist group Ansar al-Islam was in Kurdistan. ~Victor Davis Hanson

Perhaps few people questioned this, regardless of their partisan affiliation.  Perhaps more should have challenged the easy association of Ansar al-Islam and Zarqawi with Al Qaeda c. 2002-03, but no matter.  More certainly should have questioned whether their presence in a part of Iraq that Hussein did not control (and which we could have attacked with impunity anyway) was a legitimate justification for invading the rest of Iraq, where Ansar al-Islam clearly was not.