This Wednesday, the Supreme Court will hear a case that poses the most direct challenge yet to the legitimacy of the modern federal government. The right-wing legal movement’s target is the “administrative state”—the agencies and institutions that set standards for safety in the workplace, limit environmental hazards and damage, and impose rules on financial markets to ensure their stability and basic fairness, among many other important things. The case, Securities and Exchange Commission v. Jarkesy, threatens all of that. Terrifyingly, this gambit might succeed. snip Were Jarkesy to win, he would help achieve what the conservative legal movement’s members have...