People have active imaginations, but there will be no great civil war for the whole United States, no grandiose climatic fight. The decline of empires is like falling down a long flight of stairs. There isn't a big, glorious concluding event. It's just a slow, long fall where you gradually lose more and more along the way and eventually are forgotten.
Our population is so domesticated that they would never fight for anything. When the police comes for their guns, most will give them up. The death cult controls the schools, the news, and the entertainment industry. Most people have been conditioned to buy their message. Even if some people don't, they're not going to resist, because resisting means being fired from your job or fined by the government and being unable to engage in the economy and losing your TV and movies and video games. It is hard to grow up with such comfort and then give it up. Even if someone was willing to give it up, they would hopefully recognize the futility of trying to fight against a vast, self-perpetuating system. They will have no serious financial aid and won't have the numbers to accomplish anything significant. They would only be hunted and either 1. live their lives in hiding as the government becomes increasingly better able to track people, 2. give up and flee the country and try to fit in as a foreigner in a different land, or 3. be eventually captured and used as boogeymen by the media and accelerate the agendas they were trying to fight against. The best they can hope for is being able to set up their own little communities, their own no-go zones where the police won't try to encroach upon.