Do you believe another Civil War is an impossibility? What factors or issues could spark American Civil War II?

I read something a few months ago that made me think a Civil War was a very strong possibility. Yes, it’s coming back to me now. Countries that have insurgencies (the modern equivalent of civil wars) all have two factors in common: 1. A major political party that is built not around an ideology but around an ethnic group. The article identified the Republican Party as fulfilling this requirement as it is increasingly becoming a party that serves the interests of white nationalists. 2.They are countries that are either totalitarian but opening up to democracy or democracies that are sliding back towards totalitarianism.