Works both ways. The President is practicing asymmetrical warfare against ISIS right now. He is fighting them in ways that gives them little wiggle room. And were idiots like you to try a guerrilla war here in the US, there are many of us that would aid in taking you out. You cannot hide in a population that is largely hostile to you.
Your assumption that the population would be "largely hostile" isn't true, and I seriously doubt the president is going to launch airstrikes against American cities. You can't "take anyone out" if you don't know who they are. Meanwhile, the anti-secession politicians will be getting slaughtered.
It may never happen, but it's fun to think about fascist assholes like you scurrying about in mortal terror all day.