THE WTO APPELLATE BODY CRISIS: LEGAL IMPLICATIONS FOR MULTILATERAL TRADE DISPUTE RESOLUTION

Author- Ayushi Mishra

Abstract

The World Trade Organisation (WTO) was established to promote a rule-based multilateral trading system. Its Dispute Settlement Mechanism (DSM) has long been regarded as the backbone of the international trade, ensuring predictability, legality, and restraint in international trade relations. The Appellate Body (AB), as the final adjudicatory authority within the DSM, has played a critical role in ensuring coherence in treaty interpretation and enforcing compliance with WTO obligations. However, since 2019, the AB has remained non-functional due to the United States' sustained blockage of judicial appointments, triggering an unprecedented institutional crisis within the multilateral trading system.

This article examines the origins and evolution of the Appellate Body crisis, situating it within broader concerns raised by the United States. It critically analyses these objections in light of the Dispute Settlement Understanding (DSU), assessing whether the Appellate Body exceeded its mandate or whether such claims reflect deeper tensions between multilateral legal constraints and assertions of national sovereignty. The article further explores the legal consequences of the Appellate Body's paralysis, including the rise of appeals into the void, the erosion of the enforceability of panel reports, and the consequent weakening of the WTO's rule-based order.

The article also emphasises on disproportionate impact of the crisis on developing and smaller economies, for whom the DSM serves as a vital shield against power-based trade retaliation. The article also evaluates interim and alternative mechanisms, such as the Multi-Party Interim Appeal Arbitration Arrangement (MPIA) and the growing reliance on regional and bilateral dispute settlement frameworks, highlighting both their pragmatic utility and their limitations. It ultimately argues that while temporary arrangements may mitigate short-term disruptions, the restoration and reform of the Appellate Body remain indispensable for preserving the legitimacy, coherence, and long-term sustainability of multilateral trade governance.

I. Introduction

A cornerstone of the global trading system, the WTO was formed in 1995 with an aim of promoting a rule-based multilateral framework to ensure predictability, transparency and fairness in the international trade. One of its most critical mechanisms has been the Dispute Settlement Mechanism (DSM), which provides an impartial process for resolving trade disputes between member countries. Within the DSM, the Appellate Body (AB), plays a vital role in reviewing legal interpretations and ensuring compliance with the WTO agreements.

However, the DSM has been impaired due to the United Statesblocking the appointment of new judges[1], leading to a paralysis of AB since 2019. Consequently, the non-functioning of the AB has led to a significant crisis in the multilateral trading system, with far-reaching legal and geopolitical implications.

II. The Ab: Structure & Function

The dispute resolution mechanism under the WTO is structured as a two-tier process[2]. The first tier involves a panel that reviews the dispute and delivers a report on its findings. The parties discontented with the panel’s decision, can appeal to the Appellate Body (AB)- the second tier, consisting of seven members. These members review legal interpretations and provide a final decision that is binding on all parties involved.

The WTO’sDispute Settlement Understanding[3] (DSU), grants the Appellate Body the authority to interpret and apply WTO agreements in resolving trade disputes. The AB needs to provide definitive legal interpretations, ensuring that the panel’s findings comply with the law of WTO. Its decisions often shape the interpretation of global trade law and set precedents that guide future trade practices. Moreover, the AB has a significant roleto enforce its decisions, thus ensuring compliance. Its objective is to maintain the integrity of the multilateral trade by resolving disputes impartially, thus preventing trade wars or unilateral actions by member states.

III. WTO Appellate Body (Ab) Crisis: Origins

The crisis can be traced back to the persistent blockage of new appointments of judges by the United States since 2016[4]. Through its trade representative, the US has raised[5] several objections to the functioning of the AB, accusing it of judicial overreach—whereby the body has been alleged to exceed its mandate by interpreting WTO agreements too broadly or making decisions that establish legal precedents not explicitly supported by the agreements. The US alleged it as a violation of its sovereignty, stating that the AB imposed obligations on the US without proper legislative backing.

Issues highlighted by US trade representative:

●      Missed Deadlines: The US has expressed dissatisfaction with the time taken by the AB to issue rulings. The consistent breach of the mandatory 90-day deadline[6] for deciding appeals, impacts the effectiveness and prompt resolution of disputes. These delays, the US argues, create uncertainties and harm global trade.

●      Advisory Opinions: The AB issued opinions on issues not necessary for resolving disputes, which extended beyond its mandate and contributed to delays.

●      Binding Precedent Claim: The AB has asserted that its reports should be treated as binding precedent, contrary to the WTO laws that specify panel and AB reports should not add to or diminish rights and obligations[7]. The US has criticized this practice that it believes undermines the flexibility of the WTO agreements. 

●      Exceeding Authority: The AB reviewed panel findings of fact and domestic law interpretations, which is outside its limited scope to review only legal issues.

●      Extended Member Participation: The AB allowed individuals whose terms had expired to continue deciding cases, lacking authority under the rules to do so.

●      Ignoring WTO Rules: The AB sometimes ignored clear WTO rules, such as recommending measures only if a violation was found.

●      Erroneous Interpretations: The AB's interpretations favored non-market economies, undermined the use of trade remedies, and imposed new obligations not agreed to by members.

●      Overreach in Safeguards: The AB imposed obligations like proving "unforeseen developments" for safeguard measures, complicating their legitimate use by members.

Consequently, since December 2019, the AB consists of lesser than the minimum number of judges required to function, rendering it nonfunctioning to address the new appeals. Without AB, any disputes that are appealed remain unresolved, creating a legal vacuum that undermines the enforceability of WTO rules.

IV. The Legal Implications:

The collapse of the DSU, due to the AB crisis has had profound legal implications for the multilateral trading system. One of the most significant consequences is the phenomenon of “appeal into the void,” where parties[8] to a dispute file an appeal to the non-functioning Appellate Body, resulting in a suspension of the dispute resolution process indefinitely. As a result, panel decisions that are appealed cannot be enforced, leaving many trade disputes unresolved. This tactic is particularly problematic for developing and smaller economies, which rely on the enforceability and predictability of WTO regulations to protect their trade interests.

At the same time, this paralysis of the Appellate Body has also weakened the rule-based nature of the WTO’s legal framework. In absence of a functioning appeals procedure, countries have resorted to unilateral actions and retaliatory tariffs, leading to increased trade tensions and potentially trade wars. The lack of legal certainty has caused a shift toward protectionism and the fragmentation of international trade law, as countries seek alternatives through regional and bilateral trade agreements.

For smaller economies, the loss of a reliable dispute resolution mechanism means that they are more vulnerable to the economic power of larger countries, as they no longer have an impartial legal body to ensure that trade agreements are enforced. This undermines the principle of legal equality that the WTO was designed to promote.

V. The Challenges To WTO Amidst Rising Trade Protectionism:

In recent years, and more prominently during the Trump presidencies, the U.S. has adopted a more nationalist and transactional approach to global institutions, including the WTO. Under the banner of “America First,” the U.S. has pulled back from multilateral cooperation, undermined institutional reforms, and openly questioned the value of international financial organizations that, in its view, no longer serve American interests. This drastic policy shift has called into question the legitimacy of international multilateral financial institutions.

This crisis of legitimacy is further compounded by the rise of US economic isolationism and unpredictability with respect to global trade. Expressing scepticism toward global institutions that limit US unilateralism, the 2025 US Trade Policy Agenda[9]comprehensively critiqued the WTO and its failure to further the objectives of its founders. Underlining its reform failure, the report went to the extent to state that the WTO has “lost its way,” fuellinguncertainty on the future of American leadership in global economic governance.

VI. Temporary Solutions And Alternatives To The Appellate Body:

Nevertheless, several temporary solutions have emerged amidst the absence of a functioning AB. One of the most prominent is the Multi-Party Interim Appeal Arbitration Arrangement (MPIA), devised by the European Union. Established in 2020[10], the MPIA provides a mechanism for participating countries to resolve disputes through arbitration under Article 25of the DSU. The MPIA follows a similar process to the AB, with a 90-day deadline for appeals. Till date, 54/164 WTO members, including China, Canada, and Australia, have joined the MPIA. However, the US has not signed on, limiting the arrangement's global effectiveness.

Article 25 of the DSU also allows for ad-hoc arbitration between willing parties, providing a flexible alternative to the formal dispute resolution process. This method was rarely used before the Appellate Body crisis, but it has gained renewed attention as a viable interim solution.

In addition, countries are increasingly turning to bilateral and regional trade agreements that include dispute resolution mechanisms, such as the United States-Mexico-Canada Agreement (USMCA) and the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP). Although these mechanisms provide faster and more flexible process for resolving trade disputes,they also contribute to the fragmentation of the international trade framework, as each agreement establishes its own rules and standards.

VII.     The Role Of The WTO General Council And Reform Efforts:

In order to mitigate the crisis, the WTO has undertaken measures to address the disparities and discontent. The members also have been discussing potential reforms to restore the dispute settlement mechanism. The WTO General Council has been tasked with leading these reform efforts, and members have committed to having a fully functioning dispute settlement mechanism by 2024. One of the key issues is the need to address judicial overreach by providing clearer guidance on the scope of the mandate of the AB and its interpretation of WTO agreements.

Reform proposals[11] also include the strict enforcement of the 90-day limit for appeals and improving communication between the AB and member states to ensure that rulings are issued in a timely manner. There are also calls for greater transparency in the dispute settlement procedure, with some members proposing regular dialogues between the AB and WTO members to address the reservations about legal interpretations.

In the 13th Ministerial Conference, WTO members reaffirmed their commitment to work towards necessary reform of the organization. The Abu Dhabi Ministerial Declarationreaffirmed the MC12 pledge to work towards necessary reform of the WTO to improve all its functions,in order to enhance the WTO's efficiency, effectiveness, and facilitation of participation of members in WTO work.However, the success of these reform efforts will depend on whether the US and other key WTO members can reach a consensus on how to address the underlying issues that led to the crisis.

VIII.         Broader Implications For Multilateral Trade Governance:

The AB crisis has broader implications for the governance of global trade. The weakening of the WTO’s legal framework reflects a growing trend toward protectionism and unilateralism in global trade, as countries increasingly prioritize national interests over multilateral cooperation. The rise of trade wars between major economies and protectionist tariff regimes has further strained the multilateral trading system.

For developing countries, the crisis represents a significant setback in their efforts to achieve fair and equitable participation in global trade. The lack of a functioning AB disproportionately affects smaller economies, which rely on the enforceability of trade agreements to protect their interests against larger trading powers.The crisis also highlights the growing tension between multilateralism and regionalism in global trade. As countries turn to regional and bilateral negotiations to resolve disputes, the role of the WTO as the central arbiter of trade law is increasingly being challenged.

IX.            Way Forward: Prospects For Reform

Despite the challenges posed by the AB crisis, there are reasons for optimism regarding the future of global trade dispute resolution. The ongoing reform efforts represent an opportunity to address the weaknesses in the current system and restore confidence in the multilateral trading system. If WTO members can reach a consensus on reforming the AB, it could lead to a more resilient and effective dispute settlement mechanism. Undoubtedly, any reform or consensus is untenable without an active US presence and participation.

In the meantime, the MPIA and other temporary solutions provide a viable alternative for resolving disputes, allowing WTO members to continue enforcing trade agreements while broader reforms are discussed. However, the long-term success of the WTO will be contingent on its ability to adapt to the evolving needs of the international trading system and address the concerns of all its members.

Undoubtedly, the paralysis of the WTO AB has created significant challenges for the multilateral trading system, undermining the enforceability of trade agreements and increasing the risk of unilateral actions. While temporary solutions such as the MPIA provide a short-term fix, the restoration of the AB is essential for ensuring the future of rule-based trade governance. Ultimately, the resolution of the AB crisis will also be determinative of the relevance of WTO in a rapidly evolving global economic landscape. As international trade becomes increasingly complex, the WTO will need to strike a balance between respecting national sovereignty and ensuring the rule of law in global trade. The restoration of the AB alongside reforms to address concerns about its functioning, is critical to preserving the WTO’s central role in maintaining fair, predictable, and enforceable trade rules.

Moving forward, WTO members will need to work collaboratively to restore confidence in the system and ensure that trade disputes are resolved efficiently, fairly, and transparently. The long-term stability of the global trading system depends on these efforts, as well as the willingness of major economies to prioritize multilateral solutions over unilateral actions. Thus, the resolution of the WTO AB crisis will be a litmus test for the future of global trade governance and international cooperation. In this regard, the coming years will be pivotal for the future of multilateralism and international trade law.

X.         Conclusion

The crisis of the WTO Appellate Body marks a defining moment for the multilateral trading system. What began as a procedural deadlock over judicial appointments has gradually evolved into a deeper challenge to the very idea of rule-based trade governance. By rendering the Appellate Body non-functional, the dispute settlement mechanism has been deprived of its final and binding layer, thereby weakening the enforceability, predictability, and credibility of WTO law. This paralysis has exposed the fragility of institutional arrangements that depend not only on legal design, but also on sustained political commitment from powerful member states.

The legal consequences of the Appellate Body’s paralysis are both immediate and structural. The practice of “appealing into the void” has transformed the dispute settlement process into an incomplete system, where panel rulings can be effectively neutralised without legal resolution. As a result, the WTO’s promise of legal equality among members has been diluted, and the balance between law and power has begun to tilt in favour of economically dominant states. For developing and smaller economies, this shift is particularly damaging, as it erodes one of the few multilateral safeguards available against unilateral trade measures and coercive retaliation.

At the same time, the crisis reflects a broader tension within global economic governance. The objections raised by the United States, whether framed as concerns over judicial overreach, sovereignty, or institutional overextension, point to an unresolved conflict between multilateral legal constraint and domestic political accountability. While some of these concerns merit serious engagement, their resolution through institutional paralysis rather than negotiated reform has imposed systemic costs on the entire membership. The Appellate Body crisis thus illustrates how disengagement by a single powerful actor can destabilise a rules-based system that relies on collective adherence.

Interim mechanisms such as the Multi-Party Interim Appeal Arbitration Arrangement demonstrate that WTO members remain committed to preserving legal adjudication in trade disputes. However, these arrangements are inherently limited in scope, participation, and authority. Their growing use, alongside an increased reliance on regional and bilateral dispute settlement mechanisms, risks fragmenting international trade law and weakening the WTO’s position as the central forum for trade governance. Such fragmentation may offer short-term flexibility, but it undermines the coherence and universality that multilateralism seeks to achieve.

Ultimately, the future relevance of the WTO depends on whether its members can restore confidence in its dispute settlement system through meaningful reform. The Appellate Body must be re-established in a manner that addresses legitimate concerns regarding mandate, procedure, and institutional accountability, while preserving its essential function as an independent adjudicatory body. Without a functioning appellate mechanism, the WTO risks devolving into a forum for negotiation without enforcement.

The resolution of the Appellate Body crisis will therefore serve as a critical test for the future of multilateralism itself. In an increasingly fragmented and protectionist global economy, recommitting to a rules-based system of trade dispute resolution is not merely a legal necessity, but a political choice. Whether WTO members are willing to make that choice will determine the durability of the international trading system in the years to come.

References:

1. Asit Ranjan Mishra, “India appeals to the void in WTO dispute settlement body over ICT tariffs”, Business Standard, May 25, 2023, available at: https://www.business-standard.com/economy/news/india-appeals-to-the-void-in-wto-dispute-settlement-body-over-ict-tariffs-123052501105_1.html (last visited on Dec. 12, 2025)

2. D Ravi Kanth, “Explained: Why has the U.S. crippled the functioning of the WTO?” The Hindu, Jan. 6, 2020, available at: www.thehindu.com/business/Economy/why-has-the-us-crippled-the-functioning-of-the-wto/article30480585.ece (last visited on Jan. 28, 2026)

3.     World Trade Organization, A Handbook on the WTO Dispute Settlement System, available at: https://www.wto.org/english/tratop_e/dispu_e/disp_settlement_cbt_e/c1s1p1_e.htm (last visited on Jan. 28, 2026)

4.     World Trade Organization, WTO Reform: Ministerial Conference Briefing Note, available at: https://www.wto.org/english/thewto_e/minist_e/mc13_e/briefing_notes_e/reform_e.htm (last visited on Jan. 10, 2026)

5.     WTO Plurilaterals, The Multi-Party Interim Appeal Arbitration Arrangement (MPIA), available at: https://wtoplurilaterals.info/plural_initiative/the-mpia/ (last visited on Jan. 5, 2026)

International Conventions and Regulations

6.     The Understanding on Rules and Procedures Governing the Settlement of Disputes, Marrakesh Agreement Establishing the World Trade Organization, Annex 2, 1869 U.N.T.S. 401

7.     The Understanding on Rules and Procedures Governing the Settlement of Disputes, Marrakesh Agreement Establishing the World Trade Organization, Annex 2, art. 17

Reports & Research Papers

8.     European Parliamentary Research Service, The WTO Appellate Body Crisis (2024), available at: https://www.europarl.europa.eu/RegData/etudes/BRIE/2024/762342/EPRS_BRI(2024)762342_EN.pdf..

9.     Office of the United States Trade Representative, 2025 Trade Policy Agenda: WTO at 30 and 2024 Annual Report of the President of the United States on the Trade Agreements Program (2025), available at: https://ustr.gov/sites/default/files/files/reports/2025/2025%20Trade%20Policy%20Agenda%20WTO%20at%2030%20and%202024%20Annual%20Report%2002282025%20--%20FINAL.pdf (last visited on Jan. 5, 2026)

10.     Office of the United States Trade Representative, Report on the Appellate Body of the World Trade Organization (2020), available at: https://ustr.gov/sites/default/files/Report_on_the_Appellate_Body_of_the_World_Trade_Organization.pdf

[11]D Ravi Kanth, “Explained: Why has the U.S. crippled the functioning of the WTO?” The Hindu, Jan. 6, 2020, available at:www.thehindu.com/business/Economy/why-has-the-us-crippled-the-functioning-of-the-wto/article30480585.ece(last visited on Jan. 28, 2026).

[12]World Trade Organization, A Handbook on the WTO Dispute Settlement System, available at: https://www.wto.org/english/tratop_e/dispu_e/disp_settlement_cbt_e/c1s1p1_e.htm (last visited on Jan. 28, 2026)

[13]The Understanding on Rules and Procedures Governing the Settlement of Disputes, Marrakesh Agreement Establishing the World Trade Organization, Annex 2, 1869 U.N.T.S. 401.

[14]European Parliamentary Research Service, The WTO Appellate Body Crisis (2024), available at: https://www.europarl.europa.eu/RegData/etudes/BRIE/2024/762342/EPRS_BRI(2024)762342_EN.pdf

 (last visited on Jan. 2, 2026).

[15]Office of the United States Trade Representative, Report on the Appellate Body of the World Trade Organization (2020), available at: https://ustr.gov/sites/default/files/Report_on_the_Appellate_Body_of_the_World_Trade_Organization.pdf

 (last visited on Jan. 2, 2026).

[16]The Understanding on Rules and Procedures Governing the Settlement of Disputes, Marrakesh Agreement Establishing the World Trade Organization, Annex 2, art. 17.

[17]Supra note 6, art. 19.

[18]Asit Ranjan Mishra, “India appeals to the void in WTO dispute settlement body over ICT tariffs”, Business Standard, May 25, 2023, available at: https://www.business-standard.com/economy/news/india-appeals-to-the-void-in-wto-dispute-settlement-body-over-ict-tariffs-123052501105_1.html(last visited on Dec. 12, 2025).

[19]Office of the United States Trade Representative, 2025 Trade Policy Agenda: WTO at 30 and 2024 Annual Report of the President of the United States on the Trade Agreements Program (2025), available at: https://ustr.gov/sites/default/files/files/reports/2025/2025%20Trade%20Policy%20Agenda%20WTO%20at%2030%20and%202024%20Annual%20Report%2002282025%20--%20FINAL.pdf(last visited on Jan. 5, 2026).

[20]WTO Plurilaterals, The Multi-Party Interim Appeal Arbitration Arrangement (MPIA), available at: https://wtoplurilaterals.info/plural_initiative/the-mpia/(last visited on Jan. 5, 2026).

[21]World Trade Organization, WTO Reform: Ministerial Conference Briefing Note, available at: https://www.wto.org/english/thewto_e/minist_e/mc13_e/briefing_notes_e/reform_e.htm(last visited on Jan. 10, 2026).

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