Medicaid is a big deal. It is the U.S. health insurance safety net for low-income pregnant women and children, but it also affects many people above the poverty line, including disabled people in middle-class families and aged adults who, in an unsettlingly common pattern, live working class or middle class lives but lose all assets during extended nursing home stays. Now that the Affordable Care Act of 2010 (ACA) is implemented, Medicaid also covers many low-income, non-elderly, non-parent adults. The complex world of Medicaid is swirling with questions. What does Medicaid do for people? Why do people tend to support or oppose Medicaid policy? What is it like to be a Medicaid beneficiary? Will social divisions or administrative red tape eventually sink the program, or will it grow? This book helps answer these questions. Each chapter contains insights useful for practitioners and researchers alike. This book is also useful for both beginners and specialists. Each chapter introduces a key issue then takes a deep dive into the most important nooks and crannies of the program. This book also raises new questions. For those interested in answering these questions, the following chapters offer a wide range investigative techniques that future Medicaid researchers could employ. Warning: the work will not be easy. Medicaid is complex and constantly changing. Yet whether readers want to understand ongoing changes or create changes of their own, they are likely to find much of the information they need in the chapters that follow.