Peter Wehner in the WSJ on May 23:
Iraqis can participate in three historic elections, pass the most liberal constitution in the Arab world, and form a unity government despite terrorist attacks and provocations. Yet for some critics of the president, these are minor matters. Like swallows to Capistrano, they keep returning to the same allegations -- the president misled the country in order to justify the Iraq war; his administration pressured intelligence agencies to bias their judgments; Saddam Hussein turned out to be no threat since he didn't possess weapons of mass destruction; and helping democracy take root in the Middle East was a postwar rationalization. The problem with these charges is that they are false and can be shown to be so -- and yet people continue to believe, and spread, them. Let me examine each in turn:
Read the rest of his essential piece here. Despite its accuracy, the article will be largely ignored, because the erroneous talking points have been repeated so many times that it seems too late for correction - and the White House hasn't done a good job refuting them.