Conservatives like Chavez and Graham now like to hide behind the CIA, blaming bad intelligence for the missing WMDs. Bush didn't screw up, they argue, he merely relied on inadequate intelligence. But the Straw section of the Downing Street memo kills that argument. Straw presumably had access to the best intelligence on the topic, and still he wasn't sold. The bottom-line: even the bad intelligence led to a "thin" case. The problem was not merely the crappy intelligence; it was how Bush used the bad intelligence and stretched it beyond its limits to ease the way to war.
Put aside the question of "fixed" intelligence. The DSM demonstrates that Bush was dishonest with the public about his intentions and that the intelligence he did have in hand--fixed or not, faulty or not--did not support the case for war. I can understand why conservative cheerleaders of the war don't want such matters being discussed. But to call the Downing Street memo an item of no importance is to descend into the land of total spin.