[The_Victor]

The challengers’ central argument in King v. Burwell is that the Affordable Care Act—the signature achievement of the Obama Administration and the most significant social legislation in a generation—must be given an interpretation that no legislator, no analyst, no journalist, and no pundit ever anticipated, aloud or in print, prior to its passage.

That is an outright lie. There are public statements made by lawmakers and administration supporters during the writing of the ACA, detailing the carrot/stick approach of tax breaks for state exchanges only.

[House Atreides]

“...There are public statements made by lawmakers and administration supporters during the writing of the ACA, detailing the carrot/stick approach of tax breaks for state exchanges only.”
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ABSOLUTELY. There are all kinds of federal laws that employ “carrots/sticks” to encourage the states to do certain things. This is same-old, same-old and is as close to a “black and white” case as you can get.