Obamacare lives on in a kind of limbo. On the left, there is a growing conviction that single-payer health care is the only way forward and that Obamacare is a well-intentioned half-measure on the road to Berniecare. On the right, Obamacare is as loathed as ever, despite congressional Republicans’ failure to unite around a replacement. Yet because Obamacare remains the law of the land, skeptics in the Trump administration find themselves charged with filling in its many regulatory blanks.