On October 10, 2017, the U.S. Supreme Court denied review in a case involving whether a lawsuit could proceed as a class action if there is no administratively feasible method of identifying members of the plaintiff class. In its brief supporting review, WLF urged the Court to review and overturn an appeals court decision that certified a huge plaintiff class despite the absence of any means of identifying class members. WLF argued that if courts cannot determine who class members are, a class action becomes wholly unmanageable.