This is a copy of an article written by William Baude on SCOTUSblog.

In the article, William analyzes the oral arguments for Armstrong v. Exceptional Child Center, a very important Supreme Court case heard by the Justices January 20, 2015.  If you don’t recall the lawsuit, see my blog: “Low Medicaid Reimbursement Rates Violate the Supremacy Clause?!… The Supreme Court to Weigh In!”

Here is the analysis:

The Supreme Court has heard a lot of preemption suits, but Tuesday’s arguments in Armstrong v. Exceptional Child Center suggest that the Court has not yet agreed on what exactly the formal underpinnings of those suits are.

The case features a debate about the intersection of two lines of precedent. One line restricts the availability of a federal statutory cause of action unless Congress has deliberately included one. The other line makes a cause of action broadly available when the plaintiff seeks an injunction to enforce a constitutional provision. At issue in this case is whether suits to enforce the preemptive effect of a federal statute are more like constitutional injunctions or statutory suits.

Both lines of precedent were on full display at yesterday’s argument. Shortly after his argument started the state’s counsel, Carl Withroe, was pressed with questions about the many prior preemption cases the Court had heard. Justice Ruth Bader Ginsburg adverted to a list of fifty-seven cases attached to the Medicaid recipients’ brief that are alleged to fail under the state’s theory. Withroe made several different attempts to distinguish those cases, although he did not seem to fully satisfy the Court. Towards the end of Withroe’s argument, Justice Anthony Kennedy asked “Did I miss something? … I thought you were going to give us a principled way to say why this case is different from our other preemption cases.”

Deputy Solicitor General Ed Kneedler took the podium next, attempting to supply that principled basis. He argued that Spending Clause legislation, and Medicaid specifically, was different from the usual preemption case for reasons rooted in the history of equity practice. Traditional equitable remedies, he said, could vindicate a person’s “liberty,” “property,” or “business,” but Medicaid was none of those things because it was a spending program created by a cooperative agreement with the state. Once again, Justice Kennedy chimed in at the end of Kneedler’s time to question whether his theory really distinguished one of the Court’s prior cases, American Trucking Associations v. City of Los Angeles.

Representing the Medicaid recipients, attorney James Piotrowski also faced skepticism about the implications of his position, and seemed to embrace them more than to distinguish them. He openly conceded that his clients would not have a right to sue under the Court’s statutory cause of action cases or under Section 1983. But the Supremacy Clause suit, he stressed, would seek only the narrow remedy of an injunction.

Justice Samuel Alito asked Piotrowksi whether his argument implied that someone could challenge a state’s decision to legalize marijuana as preempted by federal drug laws. Yes, Piotrowksi agreed, so long as Article III standing was satisfied, there would indeed be a cause of action. (Though Justice Alito did not specifically mention a suit by a state, the question might have been inspired by the recent marijuana preemption lawsuit filed in the Supreme Court’s original jurisdiction by two states — Oklahoma and Nebraska.)

And when Chief Justice John Roberts suggested to Piotrowski that his position would open “the courthouse door to everybody who says that federal law was not followed,” Piotrowski agreed: “Yes, your honor, that’s right. We open the courthouse doors.”

At the same time, Piotrowski also conceded that Congress could expressly preclude a preemption suit if it spoke clearly. The key, he argued, is that Congress’s decision not to create a statutory cause of action was not the same as a congressional decision to prohibit a cause of action that came from other background legal principles. Justice Kennedy did not ask Piotrowski any questions.

Lest this abbreviated summary make it seem like argument followed a clear path, I should say that there were also plenty of side points raised throughout. There were questions about how the state’s reimbursement rates related to its formula, a question from Justice Elena Kagan about why nobody from the federal Department of Health and Human Services had signed the federal government’s amicus brief, a response from Chief Justice Roberts about whether DHS was just trying to help the health-care sector “get a bigger chunk of the federal budget,” and a series of questions from Justice Stephen Breyer about the doctrine of “primary jurisdiction,” including a nostalgic reminiscence about the Civil Aeronautics Board “of blessed memory.” But the Justices also constantly reminded one another that the question was whether the suit could be brought, not whether it should prevail.

Four Justices have already answered that question in their dissent three years ago in Douglas v. Independent Living Center. Over the next few months, we will see if they have persuaded any of their colleagues to join them.