Despite the unprecedented growth of arbitration and other means of ADR in treaties and transnational contracts in recent years, there remains no clearly defined mechanism for control of the system. One of the oldest yet largely marginalized concepts in law is the public policy exception. This doctrine grants discretion to courts to set aside private legal arrangements, including arbitration, which might be considered harmful to the "public." The exceptional and vague nature of the doctrine, along with the strong push of actors in dispute resolution, has transformed it, in certain...