Shearson/American Express v. McMahon: Broadened Domain of Arbitration in U.S.A. - Journal of International Arbitration View Shearson/American Express v. McMahon: Broadened Domain of Arbitration in U.S.A. by - Journal of International Arbitration Shearson/American Express v. McMahon: Broadened Domain of Arbitration in U.S.A. 4 3 Journal of International Arbitration