Medicare for All is officially en vogue among Democrats angling for national attention. With Republicans’ efforts to repeal Obamacare flailing, progressives have gone on offense, focusing on their own aspirations for the nation’s health care system. And a growing number of elected Democrats are lining up behind a single-payer plan that is far more ambitious than anything enacted by President Barack Obama. “As proud Americans, our job is to lead the world on health care, not to be woefully behind every other major country.” On Wednesday afternoon, Sen.