In New York v. United States, 505 U.S. 144 (1992), the Court revived state sovereignty as a justiciable constitutional constraint on federal mandates, and struck down portions of the Low-Level Radioactive Waste Policy Amendments Act on the grounds that the statute impermissibly commandeered state governments. Printz v. United States, 117 S.Ct. 2365 (1997), confirmed the anti-commandeering principle and relied upon it to invalidate elements of another federal statute, the Brady Act. This Article analyzes and criticizes the anti-commandeering jurisprudence, as it has emerged in New York, Printz, and a case decided by the Court last Term, Pennsylvania Department of Corrections v Yeskey, 118 S.Ct. 1952 (1998). We clarify the distinctions th...