Abstract
The adoption of the Lisbon Treaty on December 1, 2009 puts into perspective new dimensions of the role of national parliaments into the decisional core of the European Union. Indeed, this Treaty offers to the national parliaments more power to intervene into European affairs but it also strengthens the inequalities between the member States. Therefore, it is interesting to see how since 1979 the national parliaments have lost numerous of these prerogatives but also how things have changed since the entry in force of the Treaty of Lisbon with a movement of rejection of Europe by the population of the member states. To that extent, we will see the nature of the relationship between the EU and the national parliaments within the European institutional framework and to what extent we could say that the national parliaments have gained more powers within the EU. But at the same time, we will also analyze the limits of this extension.
