During Supreme Court oral arguments in the Trump v. CASA, Washington, and New Jersey cases, Justice Clarence Thomas delivered a surgical takedown of the legal rationale for nationwide injunctions, using just one line.The case centers around whether lower courts can issue sweeping injunctions that block federal policies nationwide, even when only a handful of plaintiffs are before the court. Representing the United States, Solicitor General John Sauer argued that such broad orders violate established legal norms and Supreme Court precedent.“We believe that the best reading of that is what you said in Trump against Hawaii, which is that Wirtz in...