ISIS is nothing more than some regime of hard line Muslims who run an area under very strict Sharia Law. They are not attacking the U.S...they are directing traffic, keeping prices fair in the marketplace, and settling disputes in that region or did you not watch the video.
Honestly, they are the end result of removing Saddam from office because these are the people that he kept under lock and key. Do we really need to spend billions of dollars to topple another regime just for something even worse to come along.
Back in the Saddam days, Iraq was fucked up but it was at least westernized. Women worked, drove around in cars and didn't have to wear veils and could hold office, alcohol and pork was permitted, and Christianity was allowed plus you could do business with them.......all gone now. Now Christians are fleeing for their lives, women have no rights whatsoever, and the place is a giant fuckhole.
Just because we fucked it up doesn't mean we need to clean it up. We need to stay out of that region because that place has always been "crazy man's land" and there's nothing that the US can do to change it....we'll only make the problem worse.