Public support for single-payer health care has been rising in recent months amid failed Republican efforts to repeal and replace the Affordable Care Act. That’s perhaps why Sen. Bernie Sanders on September 13 introduced a new version of his single-payer plan with the support of 16 Democratic colleagues, a sharp rise from 2013 when none signed on to a similar proposal. It would not only expand Medicare to all Americans but make it more comprehensive by covering more services