No sauce, but remember reading somewhere with Obamacare congress ceded any authority they had over healthcare to the executive branch.
However, instead of creating another bureaucratic entity (EPA for example) all authority is the hands of POTUS. Imagine what HRC could have done with this power.
I am certain that if the idiots in power back then could have thought someone like Trump had an even small chance of winning Obamacare would have never came into existence.