At a March GOP meeting in my congressional district, I said, “I am a Christian first, an American second, and then a Republican.” Immediately, an older gentleman yelled out, “That is why we don’t like you!” I wondered what bothered him more, the Christian or the American part. Our politics have become toxic. Too many voters treat their political party as the most important thing in their lives. They consider the other side to be their enemy or, even worse, evil. This phenomenon spans both...