Justice Ginsburg, joined by Justice Sotomayor and in significant portions by Justices Breyer and Kagan, agreed that the Anti-Injunction Act did not apply and that the shared responsibility payment was valid under the taxing power. She would also have upheld the minimum-coverage provision under the Commerce Clause, making the Chief Justice’s contrary Commerce Clause analysis unnecessary to the judgment.
In her view, the uninsured are not outside the health-care market. Everyone inevitably consumes medical care, its timing is unpredictable, and federal and state law often ensure that care is provided even when the patient cannot pay. The resulting cost shifting raises premiums and burdens interstate commerce, so Congress had a rational basis to regulate how people finance their inevitable health-care consumption.
Justice Ginsburg rejected the activity-inactivity distinction as formalistic and unsupported by the constitutional text or precedent. She reasoned that the mandate regulates an economic choice—self-insurance rather than private insurance—and that the distinctive features of the health-care market prevent the decision from licensing general product-purchase mandates such as a requirement to buy broccoli.
She also would have upheld the Medicaid expansion in full. Medicaid had repeatedly expanded since 1965, and States had express notice that Congress retained the power to alter, amend, or repeal the program. The ACA’s expansion furthered Medicaid’s enduring purpose of providing health care to people unable to afford it, while supplying unusually generous federal funding.
Given the Court’s holding that the funding threat was invalid, Justice Ginsburg agreed with the remedy. The proper response was to sever the Secretary’s authority to withdraw existing Medicaid funds for nonparticipation, not to invalidate the offered expansion funds or the ACA as a whole.