Donald Trump is testing the guard rails of our constitutional democracy in ways we haven't seen since Nixon or McCarthyism. Americans are polarized, a political divide that seems to get deeper. Our founders were concerned about factions, which we now call parties.They gathered to sign the first founding document, the Declaration of Independence, and tried to create a baseline that we could all draw from over the years. It's an opening sentence that just about every American knows. It transcends any daily po ...