Civil War II (if it happens) will not be a re-play of Civil War I. We are where we are today simply because the Federal Government has grown way beyond it Constitutional restraints.
As an example at the end of the the Civil War it still took a Constitutional amendment to end slavery in this nation. Since them how much has our society been changed not by the route the founding fathers outlined by by Congress, the Executive branch and the courts just ruled something to happen?
Civil War II should be the states taking back the power the Constitution gives them and restrict the Federal Government from acting within their state.
After the Civil War, the Federal Government started to pattern itself after the Ottoman and Imperial Chinese Empires, complete with byzantine rules and an entrenched and unaccountable bureaucracy.
Anymore, the president is a figurehead like the Chinese emperor of old. That’s why they hate Trump. He refused to be a puppet.