Over the last three decades, the Rehnquist and Roberts Courts have carried out a quiet revolution in the nature and meaning of jurisdiction. Historically, federal courts generally treated procedural requirements, like filing deadlines and exhaustion prerequisites, as presumptively jurisdictional. In case after case, the modern Court has reversed course. The result has been an unobtrusive but seminal redefinition of what jurisdiction means to begin with: the adjudicatory authority of the federal courts. This shift is momentous, but it has been obscured by the Court\u27s erstwhile imposition of a clear statement requirement. For courts to find a statutory requirement jurisdictional, Congress must have clearly said so. Scholars have applaude...