The document discusses a recent Supreme Court ruling that makes it harder for plaintiffs to bring class action lawsuits against large companies. The ruling will make it more difficult for individuals with small claims to join together in class actions, as they now have to provide extensive evidence at the beginning of the case, before the class is certified. This ruling is a victory for large corporations as it limits their exposure to large class action lawsuits and makes class actions less attractive for plaintiffs' lawyers to pursue.