The Constitution, recent Supreme Court decisions, partisan federal and state legislation, and irresponsible social media have produced an anomalous American political and electoral system unlike any other in the world. Donald Trump and Freedom Caucus Republicans have amplified and exploited the anomalies. If they win power in November, they are likely to undermine two centuries of American democracy and a half-century of US world leadership. This course identifies the anomalies, discusses Trump and GOP tactics, predicts the outcome in November, and assesses likely consequences for Americans and for America's partners abroad..