Virtually every state in the U.S. is struggling to find ways to seal up increasingly leaky health-care systems. Hawaii was one of the first to strive for universal coverage and now reaches 98% of its residents. Florida, New York, Michigan, Maine and Wisconsin subsidize health-insurance coverage for some of their poorest citizens. South Carolina sponsors house calls for pregnant women. Alabama uses its school clinics to provide prenatal care. Despite this kaleidoscope of experiments, no one state can claim to have solved all its problems.
The newest and broadest attempt to improve access and contain costs is taking place in Oregon....