Several specialists on this area of knowledge have been studying UNASUR’s failure by using different explanatory factors. For the development of this essay, the author decides to select three of them, provided by the existing literature, so as to identify whether if there are elements in the integration statements, exit or permanence, and governmental policies of a hierarchy and the presence of those explanations related to 1) intergovernmentality vs supranationality 2) national policies relationship vs foreign policy; and identity: bolivarianism versus national identity. Explanations regarding the US hegemonic weight and the progressive isolation of Brazil since the end of Lula da Silva's term have been left out of this essay. For the analysis of these explanations, the statements of the actors are taken into account and not the texts of the analysts, which only allow us to identify the elements under study introduced by the author at the beginning of this research.