"Hey look everybody, I gave Hitler part of Europe, and now he promised he wouldn't invade anywhere else!" Says Prime Minister Chamberland.
Every ten years or so the U.S. needs to invade somewhere just to stay in fighting shape. Saddam is doing something sneaky in his weapons factory, very similar to what Germany did in the post-World War 1 years.
The U.S. lost less guys in the Gulf War than the peace time average for military deaths (training accidents, natural deaths, drunk driving).
What could be the worst thing to happen if we invaded? Bad economy? Too late. Perhaps terrorist would attack the U.S.? Already happened. Israel and Palestine would re-new attacks? They never slowed down.
If we don't stop Hussein, it wont be too long until Quaeda starts comming into the U.S. with nuclear weapons.