At the beginning of the 21st century, Latin America experienced an almost synchronized political change in many counties in what turned out to be known as the "Pink tide" for which many progressivists governments came to power. After almost two decades of pernicious neoliberalism and the production of millions of extremely poor individuals, new winds blowed in the region. The present dissertation sought to present the influence of Chavism and Lulism, as political phenomena, in regional integration through two international organizations: the Union of South American Nations (UNASUR) and the Bolivarian Alliance for the Peoples of Our America-Treaty of Peoples Trade (ALBA-TCP). In developing a comparative study between these two phenomena, we sought to analyze the antecedents of Lullism and Chavism, as well as its characteristics as a government, especially their regional foreign policy. It was identified, therefore, that these governments had some similars goals in foreign policy being regional integration one of them. However, they aimed to set a new standard on cooperation processes by adopting a post-neoliberal or post-hegemonic regionalism. These new integrationist attempts were based subjects other than economic and commercial ones but prioritized education, health, social security and development, infrastructure, regional peace and security, and conflict resolution fields. Brazil and Venezuela have sought to extend their zones of influence in South America and the Caribbean through regional integration. They do it by what we call a strategic voluntarism by which they calculate the costs and benefits by sponsoring Latin American integration. Due to the state-oriented characteristics of these governments intergovernmentalism theory looks like the most feasible to understand the absence of assignment of sovereignty to UNASUR and ALBA. A factor that has a direct impact to mesure the consolidation of a potential model of regional governance.