On December 14, the U.S. Supreme Court overturned a hostile, anti-arbitration decision from the California Court of Appeal that had relied on a class-arbitration waiver contained in a standard customer agreement as a basis to disregard the parties’ entire arbitration agreement. Concluding that the state court’s idiosyncratic contract interpretation did not place arbitration agreements “on equal footing with other contracts,” the Supreme Court held that the Federal Arbitration Act preempts the state court’s construction of the parties’ arbitral agreement. The decision marks a victory for WLF, which filed an amicus brief in the case urging the Supreme Court to reaffirm the primacy of federal arbitration law over inconsistent state laws that seek to limit the availability of efficient private arbitration. As WLF demonstrated it its brief, the California appeals court misapprehended the interplay between state and federal law in refusing to honor the parties’ arbitration agreement.