It wasn't just one source during the Bush administration either. It was both parties. Also, we supposedly shared our 'intelligence' with other Nations which all were convinced it was legit.
We already have one can of worms open, I have no interest in opening another can by relitigating the entirety of the Bush/Iraq years; they were exhausting enough to live through the first time around. I'll happily concede that the US engages in propaganda, and leave it at that. (Well, not "happily", but you know what I mean.)
We are quite good at propaganda also
http://foreignpolicy.com/2013/07/14/u-s-repeals-propaganda-b...