I saw this a while back, but I didn't get a chance to comment on it. There's a recent Factcheck.org piece on the issue of what intelligence reports Congress received about Iraq before they had their big vote on whether to approve the use of force. Members of Congress critical of President Bush on this issue have been complaining about one argument against some of them, an argument I've made a few times in the past. Some members of Congress who had the same intelligence the president had voted to approve the use of force. They saw wha the president saw, and they at the time agreed with his decision. This especially includes John Kerry, who was on the intelligence committee, but all members of Congress had a package of information that gave them roughly the same set of information Bush had access to. Some have claimed that the information given to Congress was incomplete or corrupted, but bipartisan committees have determined otherwise.
This Factcheck.org article has a fairly complete categorization of what was in the intelligence report. Most of them admitted to reading just the five-page summary of the report, and the article details what we know of what was in the whole report and the five-page summary (we don't know any of the classified information that hasn't been released). According to the article, the five-page summary compares very well with what the intelligence agencies and relevant branches of the executive knew, including what doubts they had about some of the intelligence. Almost all of it vindicates the claim that Congress had all the information Bush had. The one piece of information that Bush and co. ignored wasn't actually that significant, because the very people providing it thought the administration's conclusion was correct even if that one piece of information was less than clear. That piece of information was in the five-page summary that the members of Congress read.