“And you imagine the Congress is going to pass that?”
I would bet that, somewhere in the ACA, is hidden provision that allows the president to declare the federal government has the right to do it. Or, he’ll sign an Executive Order.
There is nothing hidden in the ACA. It is law. The full text has been available since before it passed. Any such provision would have stopped it from passing.
He can't do it by Executive Order. Orders can only implement authority he already has. He can't use them to make law. That's what this case is all about. Whether the administration's rule overstepped the statutory authority.