@edgarblythe,
I doubt very seriously at that time Medicare for All could have passed, the insurance companies would have worked overtime killing it, plus, at that time it wasn't popular. Obamacare was thought of as a socialist program by all republicans and some democrats voters which is why it had such an uphill battle getting republican or right leaning democrats governors to sign on for expanded Medicare. Moreover, the courts struck down some of the provisions which would have helped make it pay for itself. Obama was sort of busy trying to get us out of a recession. Lastly, it is a myth Obama had a two year window with the power of congress behind him to help the financial mess that George Bush had left him. He needed a supermajority or else the republicans would and did obstruct anything he did. In fact, it was a plan McDonald was proud of. He did not have a supermajority for very long.