You have to remember the current population of the United States is over 310,000,000. That's a lot of people to try and change their behaviour. Especially when most of them are pissed off. The liberals hate guns, so they wouldn't last 5 minutes if they even had enough guts to support Hussein in a "Civil War". The Barbara Streisand's, Joy Behar's, and Sean Penn's of the world would be all hiding under their beds.
There is no way troops, not to mention military leaders, would support such action, let alone carry it out. Remember, we have an all volunteer army. They chose the military. And they didn't choose it to kill Americans. And if they tried to institute the draft in order to pull off such a fiasco, they would have so many draft dodgers it would make the 60's look pale in comparision. The entire thing is absurd, and nothing more than a wet dream, if even that, for Hussein.