Although many of the mental health systems summarized in this book are from developing countries, they have plenty to offer, even to our expensive and highly technical U.S. health care system. A key big idea in contemporary U.S. health policy includes direct emphasis on prevention and population health as a mechanism to improve quality of care, health, and costs. Far too often in the United States, public health is separated from actual treatment. Current U.S. health policy effects health gains largely through a reconfiguration of the relationship between individual health and the health of a fixed population. American patients will increasingly be managed through participation in a primary care population (medical home) or an accountable care organization. Team-based care with specialized paraprofessionals such as community health workers will become commonplace, and developing countries have had greater experience in managing health through public health for decades. Community Mental Health is a great primer on the priorities, initiatives, successes, and failures encountered in other mental health systems.