The United States stands alone among industrialized nations in not providing health coverage to all its citizens. Stunningly, 46 million Americans currently lack health coverage. (1) Despite repeated attempts to expand health insurance, uninsured Americans remain the commonplace among U.S. adults. Health insurance facilitates access to healthcare services and helps protect against the high costs of catastrophic illnesses. Relative to the uninsured, insured Americans are more likely to obtain recommended screening and care for chronic conditions (2) and are less likely to suffer undiagnosed chronic conditions (3) or to receive substandard medical care (4).