Bush and the Coalition forces did not launch the war because they claimed WMD was found - but because of Saddam Hussein's refusal to allow UN weapons inspectors in. It was Saddam's fault for giving the impression he was hiding something or moving something out of the country. And to this day there more evidence that he was hiding something, than proof that he wasn't.
The only people left still shouting the "Bush lied men died" mantra, is Ron Paul, Leftist, and Trump and his followers.