Regional integration is on the rise again, despite its apparent failure among developing countries in the past. The paper first surveys the ambiguous economics of customs unions. We emphasize that the traditional dichotomy between `trade creation' and `trade diversion' is not particularly...

This paper surveys four ex-post quantitative studies of the effect of United Kingdom accession to the European Economic Countries on trade in manufactures. It starts by discussing the principal predictions of economic theory, establishing a framework for measuring integration effects, and...

Using an extension of the influence-driven lobbying approach developed by Grossman and Helpman, we study the impact of regional integration arrangements (RIAs) on trade policy towards non-members in a three-good, three-country model. We explore under what conditions the formation of an RIA...

This paper explores the links between international trade theory and the practice of trade and industrial policy in open economies, with special attention to three areas where theoretical lessons have been misunderstood in policy debates. It argues that the ‘concertina rule’ for tariff...

The Zollverein was arguably the most important free-trade agreement of the 19th century. This paper investigates the economic impact of the Zollverein on trade in Germany. Although 1834 is the official date of the Zollverein's establishment, member states in fact joined in a non-random sequence...

This paper studies the effect of switching from the destination to the origin principle of taxation on non-cooperative commodity tax equilibrium. When taxes are constrained to uniformity across commodities, the switch has no effect. When differentiated taxes are allowed, the effects of the...

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 paper analyses tax and tariff policy for trade between economies which each contain a monopolistically competitive industry producing differentiated products. The consequences of tax changes by a single country are examined, and the general desirability of taxing imports more heavily than...

A customs union is enlarged by the addition of one or more new countries. What should be the consequential change in its common external tariff (CET)? The paper attempts to make this question precise and to apply it to the enlargement of the EC. In many simple trade models the optimal CET is...

We study a model in which a customs union trades with countries that behaved strategically. If the members of the customs union are similar but not identical, one country will want to delegate authority for making union policy to its partner. Even if side-payments within the union are permitted,...