In 2011, Oregon Gov. John Kitzhaber faced a vexing problem: The state had a $2?billion hole in its Medicaid budget and no good way to fill it.

He could cut doctors¡¯ pay by 40 percent, but that might lead to them quitting Medicaid altogether. He could drop patients or benefits, but that would only compound costs in the long run. A former emergency room doctor, Kitzhaber remembers culling the Medicaid rolls in the 1980s, when he served as a state senator.

¡°When I went back home, and went back to the emergency department, I saw a couple of people who came in who lost coverage under that decision,¡± he said. ¡°One of them was a guy who had had a massive stroke. These people don¡¯t disappear.¡±