The Powers of The Central Governments and the Problems of Enlarging and Deepening the European Union: An Essay of Constitutional Political Economy

In this paper we present an adaptation of Buchanan and Tullock’s model in order to apply it to the constitutional choices regarding the assigning of powers to a supranational authority. The outcome of the economic-political model developed in this paper demonstrates that there are constraints in the supply of integration, suggesting that the enlargement and deepening of the European Union will have to be based on federalist conceptions. The authors should like to thanks seminar participants at European Public Choice conference (Belgirate 2002) and ECSA-C conference (Toronto 2002) where earlier versions of the paper have benefited from constructive suggestions. The authors assume the sole responsibility for any errors remaining in this version.