Someone you probably are not familiar with has filed a suit you probably have not heard about concerning a four-word phrase you should know about. The suit could blow to smithereens something everyone has heard altogether too much about, the Patient Protection and Affordable Care Act (hereafter, ACA).

Scott Pruitt and some kindred spirits might accelerate the ACA's collapse by blocking another of the Obama administration's lawless uses of the Internal Revenue Service. Pruitt was elected Oklahoma's attorney general by promising to defend states' prerogatives against federal encroachments and today he and some properly litigious people elsewhere are defending a state prerogative that the ACA explicitly created. If they succeed, the ACA's disintegration will accelerate.

Because under the ACA, insurance companies cannot refuse coverage because of an individual's pre-existing condition. Because many people might therefore wait to purchase insurance after they become sick, the ACA requires a mandate to compel people to buy insurance. And because many people cannot afford the insurance that satisfies the ACA's criteria, the ACA mandate makes it necessary to provide subsidies for those people.