Saddam had biochemical weapons (matter of record), there is ample proof of his willingness to use them (matter of record), the only thing that he hates more than the US (in general) is the Bush family (specifically) (matter of record), he is a member of a select group of individuals in positions of power in the Middle East who have openly admitted to the above (matter of record), he had the largest, most powerful Army found in the aforementioned group of individuals (matter of record), we are fighting a war against a shadowy, multi-national band of extreme fundamentalist Islamic suicide commandoes who get their funding from Muslim governments that hate the U.S. (matter of record), Saddam Hussein funded terrorists (matter of record).
How the hell was he NOT a threat?