03.11.2025
Working Paper

Federal Requirements for the Independence of State Judges: A Transatlantic Comparison 

Abstract
The European Court of Justice’s response to the rule of law crisis in several Member States has sparked controversial debate. To advance the debate, this study compares the CJEU’s standards for the independence of national courts with the Supreme Court’s case law on state courts in the US. The article shows that, in less than a decade, the CJEU has developed thicker requirements than its American counterpart over the course of two centuries. It explains this surprising divergence with two factors. First, the EU imposes thicker standards because it is a looser federal system that depends more on national judges. Second, selection and appointment procedures of state judges are more diverse in the US than in the EU, which prevents the development of thick federal requirements. Ultimately, the comparison supports the CJEU’s approach, but calls for caution. If the deeply integrated American society witnesses a backlash against federal standards, this should be a warning for European judges.

News from the research center

Event
28./29.05.2026 | Frankfurt am Main

Global Health Justice: Principles and Practice

Conference

Following the research focus of the Global Health Justice Postdoctoral Programme, the "Global Health Justice: Principles and Practice" conference places a particular emphasis on themes such as the human right to health, political activism and health justice issues, and problems of structural injustice and vulnerable populations in health care. Keynote lectures by Jonathan Wolff, Kanchana Mahadevan, and Caesar Atuire.

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Publication
26.03.2026 | Monograph

The Cambridge History of Latin American Law in Global Perspective

Duve, Thomas; Herzog, Tamar (eds.): The Cambridge History of Latin American Law in Global Perspective, Cambridge: Cambridge University Press, 2024 (portugiesisch 2025; spanisch 2026).

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Publication
26.03.2026 | Monograph

Rechtsgeschichte des frühneuzeitlichen Hispanoamerika

Duve, Thomas; Egío, José Luis  (2023): Rechtsgeschichte des frühneuzeitlichen Hispanoamerika, Berlin: De Gruyter, 2023.

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Event
18.04.2026 | Frankfurt am Main

Das Prinzip Donald Trump und die Verrohung der Welt

Panel Discussion, Lecture

Ein neuer Politikstil macht international Karriere. Er ist gekennzeichnet von Vulgarität, Verrohung und erklärter Rechtsfeindschaft. Machtinteressen werden nicht mehr juristisch bemäntelt. Stattdessen wird das angebliche Recht des Stärkeren zur Staatsdoktrin gemacht – innenpolitisch wie außenpolitisch. Treibende Kraft hinter dieser Verrohung der politischen Sitten ist ein US-Präsident, der nicht nur die amerikanische Gesellschaft und Kultur, sondern auch die globale Ordnung nach seinen Vorstellungen und Interessen umgestaltet. Die Römerberggespräche wollen diesen Politikstil verstehen.

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Event
14.07.2026 | Frankfurt am Main

Democracy Over Time and the Climate Crisis

Lecture Series

Vortrag von Anja Karnein (Binghamton). Die Vortragsreihe untersucht Fragen der Klimakrise als Herausforderungen für demokratische Gesellschaften und konzentriert sich auf Themen wie politische Legitimität, Widerstand gegen fossile Brennstoffe und die Interessen künftiger Generationen. Sie wird organisiert von Prof. Dr. Darrel Moellendorf und Dr. Lukas Sparenborg.

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Event
10.06.2026 | Frankfurt am Main

Capital Investment, Inequality, and State Power in a Time of Climate Emergency

Lecture, Lecture Series

The lecture series examines questions of the climate crisis as challenges for democratic
societies and focuses on issues of political legitimacy, fossil fuel resistance, and the interests
of future generations.

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Event
13.05.2026 | Frankfurt am Main

Failed States and Cloudy skies: Tipping Points, Overshoot and Permanent Emergency, after America

Lecture Series

The lecture series examines questions of the climate crisis as challenges for democratic
societies and focuses on issues of political legitimacy, fossil fuel resistance, and the interests
of future generations.

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Event
22.04.2026

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Lecture, Lecture Series

Lecture by Ross Mittiga (SOAS London). The lecture series examines questions of the climate crisis as challenges for democratic societies and focuses on issues of political legitimacy, fossil fuel resistance, and the interests of future generations. It is organized by Prof. Dr. Darrel Moellendorf and Dr. Lukas Sparenborg.

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Event
30.06.2026 | Frankfurt am Main

Recht und Angst in Demokratien

Lecture
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