Fair question.
The answer to a dictatorial Government is de-facto secession. This can theoretically be peaceful - state after state can refuse to recognized federal laws and authority in the face of continued federal Constitutional overreach.
There’s no need for the secession to become violent. Your armed forces may have a crazy person for CIC, but as I understand it your officers’ oath is to the Constitution. Obama would be crazy to risk the loyalties of the Joint Chiefs - especially as he doesn’t have a birth certificate.
The likely flash-point for any such de-facto secession would of course be Arizona.