Gee I could have sworn Usama attacked us or didn't you hear that Bush, Rummy, and even Cheney kicking and screaming said Saddam had nothing to do with it.
About your other statement about Saddam killing hundreds of thousands. Do you understand anything about Iraq history? Saddam was our friend until Dessert Storm. WHen he gassed the Kurds and Iran the Bush 41's administration insisted that it was Iran and not Saddam. We refused to condemn Saddam in the UN and in 1989 Bush 41 signed NSD 26 (national security doc) wanting to bring Saddam into a favorite trading partner. We provided Saddam with Bio & Chemical WMD. We also in 1988 trained his scientists in how to explode Nuclear Weapons.
When he told us he was going to invade Kuwait Bush 41 said nothing. We then kicked him out with Dessert storm. Bush 41 said that Iraqi's should revolt. They did and they expected our help. We didn't help and Saddam killed hundreds of thousands to put down the revolt. Heck we gave them permission to use our Helicopter gunships we sold them to fly in the no fly zone to put down the revolt. Our Marines watched them slaughter the kurds.
Apparently you do not no or understand history. Saddam was no threat to the US.