Universal health care was on the national political agenda for nearly a hundred years until a comprehensive (but not universal) health care reform bill supported by President Obama passed in 2010. The most common explanation for the failure of past reform efforts is that special interests were continually able to block reform by lobbying lawmakers. Yet, beginning in the 1970s, accelerating with the failure of the Clinton health care plan, and continuing through the passage of the Affordable Care Act in 2010, health policy reform was alive and well at the state level.

Interest...