The plaintiffs in
King v. Burwell claim that the ACA's creators intended to coerce states into setting up their own exchanges by authorizing state-established exchanges alone to credit subsidies to buyers -- denying that power to the backup federal exchange.
In response to this manifestly absurd assertion of intent, the law's supporters have pointed out that no one involved in the law's design, passage or implementation understood such coercion to exist; that laws that make federal grants to the states conditional on specific state action invariably
spell out the consequences of non-participation; that the ACA's clear intent is to provide near-universal coverage; and that the ACA's core provisions were designed to be interdependent, so that denying subsidies to residents of some states would render the law inoperable.
On
all of these points, no participant has been so eloquent as the four dissenting Supreme Court justices in
NFIB v. Sebelius, the suit challenging the law's constitutionality, who asserted that the entire law should be struck down.
In their
dissent, Justices Scalia, Kennedy, Thomas and Alito argued repeatedly that to strike down any core provision -- e.g., the individual mandate or the Medicaid expansion -- was to thwart the intent of the law's creators and render the remaining parts of the law unworkable -- hence the imperative to strike down the whole law.
Abbe Gluck has
highlighted the dissenters' most direct assertions of interdependence of parts, laying particular stress on their observation that the law's "system of incentives collapses if the federal subsidies are invalidated" because without the subsidies, "the exchanges would not operate as Congress intended and may not operate at all" (dissent, p. 60).
Equally striking is the dissenters' argument that making the Medicaid expansion fully voluntary, as the Court majority did, would also thwart Congress's manifest intent to provide universal coverage and would thus render the entire scheme unworkable.