Of course Hussein had and used chemical weapons.  The US sold them to him and he used them to attack the Kurds and Iranians. circa 1988.  The time when Hussein was a buddy to the US and warrin' on them there Iranians. 

But in the time of Bush The Lesser there were no chemical or biological weapons found.  The UN weapons inspectors were quite right and reduced to destroying the El Samood missiles because they could fly a fraction of fly's wings further than was allowed - without a payload.

The most anthrax discovered crica 2003 was in Colin Powell's wee vial he waved around at the UN to scare the world into invading Iraq.