The book provides the first in-depth and empirically grounded analysis on the foundations and trajectories of gaining authority of the four Latin American and Caribbean regional economic courts: the Central American Court of Justice (CACJ), the Caribbean Court of Justice (CCJ), the Andean Tribunal of Justice (ATJ), and the Mercosur Permanent Review Court (PRC). While these courts were, on their terms, established to build common markets and to enforce trade liberalization, they have often developed bodies of jurisprudence in domains often not directly associated with regional economic integration. The CCJ has been most successful in the area of human and fundamental rights; the CACJ has addressed issues related to the enforcement of the rule of law in national legal arenas and long-standing border disputes between the countries of the region; the ATJ is an island of effective adjudication on intellectual property issues; and the PRC has significantly struggled to receive a significant number of cases to rule upon all together. The particular trajectories of the four Latin American and Caribbean Regional Economic Courts (RECs) suggest that there is no universal formula for success for these institutions and that their operational path is not necessarily a function of their formally delegated competences and/or of the will of the Member States, as it is often argued in mainstream legal and political science literature. Rather, local socio-political contextual factors—such as the historical legacies of a region, the interests and dynamics of socialization of legally and politically situated actors, the nature of national and regional politics, and legal culture—often play a far more decisive role in influencing the direction of RECs during and after their establishment.