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Non-discrimination as Discrimination: The MFN Obligation and International Trade Law

Published online by Cambridge University Press:  24 April 2026

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Abstract

The most-favored-nation obligation, as an expression of a non-discrimination norm, is often described as fundamental for international trade law. But does MFN deserve this normative halo? This Article traces the historical emergence of MFN-as-fundamental mythology, unearthing its origin in three controversial twentieth-century projects. Rather than promoting non-discrimination, MFN was historically used to draw discriminatory boundaries—between imperial powers and colonies and between West and East. Only with the ordoliberal turn did MFN become synonymous with a universalist, non-discrimination-centric international trade law. But history also reminds that alternative norms once vied to structure international trade law. Those may be due for reconsideration.

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Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2026. Published by Cambridge University Press on behalf of American Society of International Law