Because there were no WMDs and no link to Osama Binladen and he knew that
Wrong.
I heard Saddam say he was going to provide financial support to Al-Qaeda on the 60 Minutes interview. As soon as I heard that, I said "We are going to war soon."
And Saddam admitted shortly after he was captured that he had been using a phony story about WMDs to flush out a double agent. He not only flushed out the double agent, but in the process, he also provoked the war.
The thing that really bothers me is that the news media went totally silent about these two events after they were initially reported. This tells me that, rather than reporting the truth, they are out to get Bush.