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This paper empirically examines the alternative posed by Richardson [J. Intern. Econ. 34 (1993) 39] to the traditional view that trade integration may exacerbate inefficiencies. Richardson's hypothesis boldly predicts that trade diversion (and trade creation) may actually cause tariffs to decline! The hypothesis is fundamentally attributable to the presence of a political component in the governments' objective functions. A cross-sectionally rich data set on trade and tariffs from the Mercosur-pact countries, primarily Argentina, is used. The evidence yields surprising conclusions about the validity of endogenous tariff determination in models of trade integration. D

This paper explores the determinants of federal grants allocation across provincial states in Argentina. Our analysis suggests that the redistributive pattern implicit in the federal system of intergovernmental grants cannot be explained on normative grounds exclusively. In order to understand the rationale behind federal grants distribution, a positive approach could render better results. Speci®cally, we claim that the distribution of federal grants could be associated with political variables such as the political representation of jurisdictions at Congress. The econometric analysis suggests that the signi®cant disparity observed in the per capita representation across dierent provinces is an important factor explaining the allocation of those transfers. In this respect, overrepresented provinces, both at the senate and at the lower chamber, have received, on average, higher resources from the national government compared to more populous and less represented states. These results are consistent with those observed in other countries.

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