Some moments in American politics take a while to understand. But the fight within the Republican party is changing things right now. For many, this battle is more about character than it is about values. Republican Senators Jeff Flake, John McCain, Bob Corker and former President George W. Bush have all been outspoken about the shift in their party’s tone and style under President Donald Trump. Is the GOP in the midst of a civil war, or a forgettable skirmish?