In a recent decision, the Ninth Circuit Court of Appeals ruled that parties cannot agree under a contract to limit the scope of judicial review of an arbitration award as delineated by the Federal Arbitration Act (the "FAA"). This ruling complements a 2008 Supreme Court case, Hall St. Assocs., L.L.C. v. Mattel, Inc., 552 U.S. 576 (2008), where the Court held that a clause in an arbitration agreement providing for expanded judicial review beyond what was provided for in the FAA was unenforceable. In light of the Ninth Circuit's new ruling, parties also cannot go the other way and curtail the scope of review to which the parties are entitled under the Federal Arbitration Act.