Mudanças constitucionais e poderes presidenciais nos presidencialismos da América Latina (1945-2003)

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The objective of the Master s dissertation is to examine the institutional details of agenda setting in Latin American Constitutions and analyse the changes in constitutional provisions. Moreover, the study tries to understand the influence of those changes for the executive-legislative relations and for the legislative process. The changes in constitutional rules is the focus to reassess the commom assumptions of Latin American presidential regimes. I have studied the agenda setting institutions in 17 Latin American presidential countries since 1945 in their democratic periods. The enphasis are the constitutional provisions wich give power to Presidents. I argued that constitutional powers in presidential regimes are changing along the period, because of that the consequences for Executive-Legislative relations should not be derived from a static analyse of constitutional provisions. Accounting for the effects of political institutions and other factors, my findings suggest that demands for constitutional amendments make the executive-legislative relations a dynamic process of political changes.