Two years ago, the Democratic frontrunner running for president scored votes and pundit points by reasoning that universal health care — among other big ideas being floated by liberals at the time — was too difficult: that progress happens in increments, and not earthquakes. That was 2016. This year, likely Democratic contenders for the 2020 White House race have embraced not only single-payer, but as of this week, an even more radical idea that makes government health care look like an exercise in political moderatism. Kirsten Gillibrand, Cory Booger and Bernie Sanders have each called for a program that would...
