"The final phrase of FAA § 2, however, permits arbitration agreements to be declared unenforceable "upon such grounds as exist at law or in equity for the revocation of any contract." This saving clause permits agreements to arbitrate to be invalidated by "generally applicable contract defenses, such as fraud, duress, or unconscionability."
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"In contrast, 9 U.S.C. § 10 allows a court to vacate an arbitral award only where the award "was procured by corruption, fraud, or undue means"; "there was evident partiality or corruption in the arbitrators"; "the arbitrators were guilty of misconduct in refusing to postpone the hearing . . . or in refusing to hear evidence pertinent and material to the controversy[,] or of any other misbehavior by which the rights of any party have been prejudiced"; or if the "arbitrators exceeded their powers, or so imperfectly executed them that a mutual, final, and definite award . . . was not made." The AAA rules do authorize judicial review of certification decisions, but this review is unlikely to have much effect given these limitations; review under § 10 focuses on misconduct [*351] rather than mistake. And parties may not contractually expand the grounds or nature of judicial review."
AT&T Mobility LLC v. Concepcion, 563 U.S. 333, 131 S. Ct. 1740, 179 L. Ed. 2d 742, 2011 ILRC 1711, 52 CR 1179, 79 U.S.L.W. 4279 (2011) [2011 BL 110648]