The US Supreme Court ruled that third parties and non-signatories to an arbitration agreement can appeal under the Federal Arbitration Act (FAA) when a motion to compel arbitration is denied. The majority opinion authored by Justice Scalia found that the language in the FAA referring to agreements allows any party moving for arbitration to appeal a stay of litigation, regardless of signatory status. However, the dissenting opinion of Justices Souter, Roberts, and Stevens argued that limiting interlocutory appeals has been a longstanding congressional policy and such appeals are an extraordinary interruption to normal litigation processes. Ultimately, the Court determined that any movant can appeal the loss of a motion to compel arbitration under the FAA.