You are claiming that we invade every two bit dictatorship that threatens to harm U.S politicians now. In that case I can name a couple dozen countries that we are due to invade. Invading Iraq had nothing to do with threats to Bush Sr. - you got to be a pretty loopy leftist to make that type of absurd assertion. You would be better off claiming that we did it oil - except for the fact that no US companies got the oil contracts.
Don't be absurd. If we were so concerned about Hussein's "people", why wait ten years? 9/11 was the best thing that ever happened to Bush Jr. Gave him the perfect excuse.
Read your history.