The Most-Favoured-Nation (MFN) principle has historically been instrumental in promoting stability and equitable trade conditions. In recent decades there has been a rise in bilateral and regional trade agreements, which deviate from the MFN principle in providing more favourable tariff...

This paper examines the evolution of global merchandise trade, between 2010 and 2022, assessing the share of imports subject to regional trade agreements (RTAs). A key question for us is whether the share of merchandise trade subject to preferences has kept pace with the proliferation in RTAs....

The Most-Favoured-Nation (MFN) principle has historically been instrumental in promoting stability and equitable trade conditions. In recent decades there has been a rise in bilateral and regional trade agreements, which deviate from the MFN principle in providing more favourable tariff...

This paper reveals significant errors in a key variable in international trade: tariff rates. The issues arise from incomplete reporting, leading to measurement error from false interpolation by the data provider, the World Integrated Trade Solution (WITS), and selection bias from dropping...

We study how the most-favored-nation (MFN) clause affects the tariffs of an importer, technology adoption by exporters, and global welfare. Our main contribution is to consider the disclosure effect of the MFN clause, that is, the fact that it makes tariffs not only uniform but also observable...

Many studies use tariffs to measure changes in trade policy. This paper shows that standard sources for tariffs suffer from substantial measurement error due to misreporting and the resulting false imputation: Countries fail to report tariffs every year and missing data are more prevalent for...

We study how the most-favored-nation (MFN) clause affects the tariffs of an importer, the technology choices of exporters, and global welfare. Our key contribution is to consider that the MFN clause does not only impose nondiscriminatory tariffs but also makes tariffs observable to third...

International Investment Law and other international legal systems, such as trade law and environmental law have interactions and dynamic interrelationships in meeting global challenges including energy security, climate change, and the need for the renewable energy transition. They have a...

This Article examines the theoretical and doctrinal origins and consequences of a potentially game-changing approach to processing claims brought under the Free Exercise Clause of the First Amendment. Since 1990, and the decision in Employment Division v. Smith, the Court has read that Clause...

We propose a novel approach to estimate the trade elasticity at various horizons. When countries change Most Favored Nation (MFN) tariffs, partners that trade on MFN terms experience plausibly exogenous tariff changes. The differential effects on imports from these countries relative to a...

Despite the important roel played by GATT in the world economy, economist have nto developed a unified theoretical framework that interprets and evaluates the principles that form the foundation of GATT. Our purpose here is to propose such a framework. Working within a general equilibrium trade...

Motivated by the structure of WTO negotiations, we analyze a bargaining environment in which negotiations proceed bilaterally and sequentially under the most-favored-nation (MFN) principle. We identify backward-stealing and forward-manipulation problems that arise when governments bargain under...

We describe recent work on the theory of trade agreements that speaks to the purpose and design of GATT. Our discussion proceeds in three steps. First, we examine the purpose of a trade agreement. In both the traditional economic and the political-economy approaches to the study of trade...

and non-discrimination, the two principles that are the pillars of the multi- lateral trading system as embodied in GATT and its successor, the WTO. We show that GATT's principle of reciprocity serves to neutralize the world-price effects of a country's trade policy decisions, and hence can...

This article argues that although the Most Favoured Nations principle is a hallowed cornerstone of the GATT/WTO Law, its application in practice, with all the available exceptions, does not really appear to provide a level playing field for all nations, as the principle promises

We discuss most favoured nation (MFN) treatment in trade agreements, suggesting that its value to individual countries depends critically on the relevant model solution concept used to evaluate it. We analyze both rights to MFN treatment in foreign markets, and the obligation to grant MFN...

This paper studies the effects on international trade from the annual tariff uncertainty about China's Most Favored Nation (MFN) status renewal in the United States prior to joining the World Trade Organization. The paper makes four main findings. First, in monthly data trade increases...

We study the procompetitive effects of trade policies against a foreign oligopoly in a model of vertical product differentiation. We show that a uniform tariff policy like the Most Favored Nation (MFN) clause is always welfare superior to free trade because of a pure rent-extraction effect....

When markets are imperfectly competitive, trade policies can alter the terms of trade, shift profits from one country to another, and moderate or exacerbate existing distortions that are associated with the presence of monopoly power. In light of the various ways in which trade policies may...

Over time, the use of most favoured nation clauses has seen widespread adoption in double tax treaties, especially in those agreed with developing countries. The use of such clauses, however, does not appear to have been supported frequently by tax policies and/or careful ad hoc analysis, e.g....

It is often argued that most favoured nation clauses (‘MFNs’) should be assessed on a case-by-case basis given the perceived lack of a coherent theory guiding their assessment. This article asks whether this is the case: do we lack an assessment framework of MFNs under EU competition law? In...

Increasingly, cable and satellite TV services (known as “MVPDs”) seek to acquire upstream programming creators, as illustrated by AT&T's recent merger with Time-Warner. At the same time, the pay-TV industry is rife with “most-favored nation” (MFN) agreements, which can sharply constrict...

This essay underscores the importance of background understandings in general international law for interpreting brief, open-ended clauses such as MFN clauses. Contrary to Batifort and Heath's claim, I suggest that often interpreters of MFN clauses cannot limit themselves to the text, context,...

In international law, all tribunals, whether arbitral or judicial, are of attributed jurisdiction. The attribution of this jurisdiction is based on state consent and is limited by the terms thereof. Yet, the rigours of state consent to investment dispute settlement have been eroded through the...

This paper presents a new global tariff database covering tariffs at the six-digit product level for 197 importing countries and their trading partners for 30 years, namely 1988 to 2017. I deal simultaneously with the two major issues, missing data and misreporting, almost doubling the number of...

The WTO has not been able to recover since the collapse of the Doha Round in July 2008. Several ministerial conferences including the Buenos Aires meeting in December 2017 failed to reach agreement. The US Trump Administration launched a campaign to reform the WTO in 2018 and 2019. This book...

We propose a novel approach to estimate the trade elasticity at various horizons. When large countries change Most Favored Nation (MFN) tariffs, small trading partners that are not in a preferential trade agreement experience plausibly exogenous tariff changes. The differential growth rates of...

In a three-country model of endogenous trade agreements, we study the implications of the Most Favored Nation Clause (MFN) when countries are free to form discriminatory preferential trade agreements (PTAs). While PTA members discriminate against non-member countries, MFN requires non-members to...

In a three-country model of endogenous trade agreements, we study the implications of the Most Favored Nation Clause (MFN) when countries are free to form discriminatory preferential trade agreements (PTAs). While PTA members discriminate against non-member countries, MFN requires non-members to...

Increasing moves away from multilateralism have created a fragmented trade and investment scenario where economies progressively combine the application of restrictive unilateral actions with bilateral and regional preferences. The application of, and exceptions to, the non-discrimination...

This paper illustrates the underlying economic logic behind the anticompetitive effects of what Ralph Winter and I have labeled vertical most favored nation restraints in Carlton and Winter (2018). Those are restraints in which one supplier tells a retailer that the retailer cannot set the...

We study the effects on trade from the annual tariff uncertainty about China's MFN status renewal prior to joining the WTO. We have three main findings. First, counter to the evidence elsewhere, trade increases strongly in anticipation of uncertain future increases in tariffs. Second, even...

We study the effects on trade from the annual tariff uncertainty about China's MFN status renewal prior to joining the WTO. We have three main findings. First, counter to the evidence elsewhere, trade increases strongly in anticipation of uncertain future increases in tariffs. Second, even...

World Tariff Profiles 2019 provides comprehensive information on the tariffs and non-tariff measures imposed by over 170 countries and customs territories. It is a joint publication of the WTO, the International Trade Centre (ITC) and the United Nations Conference on Trade and Development...