Following the economic crisis that hit eurozone, the reforms introduced at European and international level have had a significant impact not only on the legislation of member states but also, and above all, on the balance between constitutional bodies. The variables that mark these changes are attributable to both "endodeterminated" and "heterodetermined" factors; in particular by effect of intergovernmental agreements and European Union sources that have profoundly changed the possibility of national parliaments to still influence economic policy choices. Five years after the entry into force of the Fiscal Compact, no effective proposals have been aimed to enhance and "re-evaluate" the role of national and European representative bodies. The present work aims to highlight the main shortcomings related to this context.