Whoops
Via Harry's Place (comments) I saw reference to this startling article by Nick Cohen back in 2002 where he says the claims of Ahmed Chalabi's Iraqi National Congress to left-wing support were more than that of the ANC. It appears therefore not just half of Washington but also our foremost investigative journalist was taken in my Chalabi, who basically it appears was giving US secrets to the Iranians (there are obvious claims and counter-claims about his behaviour, but if you read (say) Josh Marshall you get the idea that most of the main claims are true).Worse still, if this Nick Cohen (and it might not be, but it's bylined London and Observer) is the same Nick Cohen (who at the time retained a critical eye on the actions of the US government ) who said:
Which makes it very strange is that the US government, in the shape of the State Department, is currently doing all it can to shut down the only reliable pro-Western source of intelligence on Saddam’s dictatorship; the clandestine information collection programme run by the Iraqi National Congress (INC).