@Robert 22 Re: The nub of the biscuit.
Mate, you're got a bit of a revisionist history...
Bush got the intel from the CIA who's source was actual Iranian.
Bush then took it to Congress which then declared war on Iraq.
Now... the funny part.
Shortly before Saddam was to be hanged, he admitted that he was the source of the WMD information. He spread the news in an effort to keep Iran at bay. (You do remember the Iran/Iraq war, right?) He was surprised that the US fell for it.
There's more, but you get the idea.
Did the US really fall for it, or did they just use it as a pretext (excuse) to take Saddam out?
You'll never know and neither will I.