A full transript of the speech that Deputy Defense Secretary Paul Wolfowitz gave at the CFR can be found here. Long, but informative, and shows the correct perspective we should be taking. Worth reading if you want to argue this subject rationally.

...Today we know from multiple sources that Saddam has ordered that any scientist who cooperates during interviews will be killed, as well as their families. Furthermore, we know that scientists are being tutored on what to say to the U.N. inspectors and that Iraqi intelligence officers are posing as scientists to be interviewed by the inspectors.

Odd behavior for a nation with nothing to hide.