Since the end of authoritarian regimes in Latin America several states of the region have amended or replaced their constitutions. One of the main characteristics of this wave of “new” constitutions concerns those norms that reshaped the understanding of supranationality. The constitutional clauses that open statehood in favor of fundamental rights and regional integration are the examples that represent the openness of windows and doors vis-à-vis supranational standards. For my Ph.D, I studied the 36 constitutions of the Americas in order to organize the taxonomies of the continental corpus iuris. Therefore, I will present the conceptual framework that allowed me not only to define Latin American supranational clauses but also to classify their levels of openness towards regional integration. This aspect is crucial for the stability and the future of both commune and transformative law in the region.