The U.S. Supreme Court recently ruled that courts cannot second-guess an arbitrator's interpretation of a contract, backing an arbitrator's ruling that a doctor's pursuit of class arbitration against insurer Oxford Health Plans LLC was permitted. Gresser explains why the unanimous ruling is significant noting, “The critical question in Oxford v. Sutter — whether, after Stolt-Nielsen, ... the class action procedure is available in arbitration — was answered in the affirmative."