a growing number of social scientists agree that the United States now fits the checklist profile of a country at risk. Trust in the national government is in steep decline. Check. Respect for democratic institutions is weakening. Check. A heavily armed population has polarized into two evenly divided partisan factions. Check. Each faction embodies a distinctive ethnic, cultural, and urban-versus-rural identity. Each wants its country to become something the other detests. And each fears the prospect of the other taking power. Check, check, and check.