We develop a model of policy experimentation in federal systems in which heterogeneous districts choose both whether to experiment and the policies to experiment with. The prospect of informational spillovers implies that in the fi rst best the districts converge in their policy choice....

The paper analyzes one important aspect of the constitutional debate: the allocation of econornie competences between the EU and the mernber states. It takes the theory of fiscal federalism as a starting point for an optimal allocation of economic competences. The main message of the theory is...

The paper analyzes one important aspect of the constitutional debate: the allocation of econornie competences between the EU and the mernber states. It takes the theory of fiscal federalism as a starting point for an optimal allocation of economic competences. The main message of the theory is...