How Obamacare is Unsustainable: Why We Need a Single-Payer Solution for All Americans assesses the Affordable Care Act and makes the case — on economic, social, and moral grounds — that an improved, single-payer, Medicare-for-all system will meet the ongoing goals of reforming U.S. healthcare. John Geyman ’52 is a professor emeritus of family medicine at the University of Washington School of Medicine.