A corporatist who was pushing something that would effectively eliminate the private Insurance industry? How does that work?
Of course Obama may no longer support Single Payer after the ACA was passed, but he certainly pushed for it before he was elected. Then again, his party is pushing for single payer now, so maybe he flipped again and supports it now. 
(Obama in 2003 stating he was a proponent of Single Payer.)
Not that any of that really matters. The same arguments were being made years ago that are being made now. There is no enumerated power under the Constitution for the Federal Government to create a law mandating people buy Health Insurance. That’s why the ACA should have been ruled Unconstitutional to begin with.
(John Stewart and O’Reilly debating single payer back in 2012.)