In April Massachusetts Gov. Mitt Romney signed into law one of the most ambitious health care reform proposals in recent history. The legislation mandates that all Massachusetts residents purchase health insurance, provides subsidies for low‐ and middle‐​income families, and sets up a new purchasing mechanism to reform the health insurance marketplace. Some observers hail this law as a major step toward achieving universal coverage. Others worry that it is a first step on the slippery slope to national health care. Four experts will examine the benefits and flaws of the Massachusetts plan and whether other states or the nation should follow its example.