Whoops indeed (from July 2018):
A NEW STUDY from the Mercatus Center at George Mason University is making headlines for projecting that Independent Vermont Sen. Bernie Sanders’s “Medicare for All” bill is estimated to cost $32.6 trillion — a number that’s entirely in line with 2016 projections, and is literally old news. But what the Associated Press headline fails to announce is a much more sanguine update: The report, by Senior Research Strategist Charles Blahous, found that under Sanders’s plan, overall health costs would go down, and wages would go up.
The study, which came out of the Koch-funded research center, was initially provided to the AP with a cost estimate that exceeded previous ones by an incredible $3 trillion — a massive error that was found and corrected by Sanders’s staff when approached by AP for comment.
But despite that correction, the report actually yields a wealth of good news for advocates of Sanders’s plan — a remarkable conclusion, given that Blahous is a former Bush administration economist working at a prominent conservative think tank.