There's only one viable, but ugly, "greater good" argument about American politics. It involves America's original sin, slavery. If our Founding Fathers had not permitted this brutal and racist practice, we likely would not be united states. We'd be separate countries. They knew that sin would eventually need to be addressed. It wasn't. It festered in the heart of our country until the Civil War. That was a very necessary war because no compromise could be met with the very racist South. I say this as a native Texan too. They try to teach us the whole "states rights" malarkey in school there, but I saw through that much to my teachers' anger. Sacrificing one's integrity comes at great cost. The cost for our nation was the Civil War. The cost of not being united states could have been speaking German after WWII. It's hard to predict things that didn't happen. Personally, I wish our Founding Fathers had found another way through. They planted the seed for change, but finked out. Politics is messy. Integrity is challenging. When Trump supporters make excuses for things, this is the only argument that makes any sense to support their point, but things are not as volatile as the age of slavery, so that point is moot.