This paper shows that the WTO's Article XXIV increases the likelihood of free trade, but may worsen world welfare when free trade is not reached and customs unions (CUs) form. We consider a model of many countries. Article XXIV prevents a CU from raising its common external tariff, which makes...

The GATT/WTO Article XXIV prevents a customs union (CU) from raising its common external tariff. In this paper, we compare CU formation with and without this Article XXIV constraint. We show, in a multi-country oligopoly model, that for a given CU structure, Article XXIV improves world welfare...

This paper shows that the WTO's Article XXIV increases the likelihood of free trade, but may worsen world welfare when free trade is not reached and customs unions (CUs) form. We consider a model of many countries. Article XXIV prevents a CU from raising its common external tariff, which makes...

We show that relaxing the assumption of CES preferences in monopolistic competition has surprising implications when trade is restricted.  Integrated and segmented markets behave differently, the latter typically exhibiting reciprocal dumping.  Globalization and lower trade costs have...

We introduce two new tools for relating preferences and demand to firm behavior and economic performance.  The "Demand Manifold" links the elasticity and convexity of an arbitrary demand function; the "Utility Manifold" links the elasticity and concavity of an arbitrary utility function. ...

This paper illustrates that an international permit trading system may hurt relatively poor countries by making associated economic activities unaffordable. A model is constructed in which the free market solution is Pareto inefficient as a result of pollution. The introduction of tradable...

This paper proposes an answer to the question of why social unrest sometimes occurs in the wake of an IMF Structural Adjustment Program (SAP). Under certain circumstances, partly determined by a country’s comparative advantage, a nation’s elite may have an incentive to make transfers to the...

This paper shows how a world price shock can increase the likelihood that democratization must be used to resolve the threat of revolution. Initially, a ruling elite may be able to use trade policy to maintain political stability. But a world price shock can push the country into a situation...

This paper shows how a world price shock can increase the likelihood that democratization must be used to resolve the threat of revolution. Initially, a ruling elite may be able to use trade policy to maintain political stability. But a world price shock can push the country into a situation...