Regional integration is a global phenomenon understood in this book as "the association between sovereign States of a given geographical region, by international agreements with the aim of approximating national laws through a binding regional law". In the context of South America, this definition had led to the study of six regional organizations, examined in a comparative manner to establish the degree of integration accomplished in this region. In a second step, the role of the law in an integrational organization and its control by a jurisdiction has been examined. Parallels are drawn between the role of the European Court of Justice and the EFTA Court and the regional jurisdictions in South America. Finally, the creation of a regional court through a Treaty, common to the six organizations compared is advocated. The political and legal feasibility, the precise characteristics, remedies and the character of the decisions of said regional court are discussed in depth.