I disagree that the Bush's desinformation about the yellowcake was a deceit similar to the Watergate.
I would hardly call it a deceit at all because it required enourmous cooperation on the part of the persons supposedely being deceited.
Like if Bush said "Hussein is collecting rubber bands, he may build a huge slingshot and hurl giant spitballs of destruction towards the american cities". It does not matter really if he was or was not buying rubber bands. A congressman who is willing to believe that rubber bands can be assembled into a trans-continental slingshot has no right to claim being deceited.
Any half-educated person or anyone with an access to expert's opinion (physics college student for example) would easily learn that in order to enrich yellowcake into weapon-grade uranium Iraq would need a giant industrial facility on the scale of a small city that would be impossible to build and run undetectably even if they had the necessary components.
miko