In Trump v. Casa, Inc., et al., No. 24A884, 606 U.S. ___ (2025), the Supreme Court ruled that lower courts lack authority to issue so-called “universal” (or “nationwide”) injunctions that extend beyond the case or controversy presented by the specific parties who are before them. In so doing, the Court will propel many litigants challenging federal statutes and policies to opt for Rule 23(b)(2) class actions in order to secure broad injunctive relief.