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Key Finding

The chapter traces the trajectory of two major US sustainability disclosure initiatives and explores their implications

Abstract

This chapter traces the trajectory of two major US sustainability initiatives, the Securities & Exchange Commission’s climate risk disclosure rule and California’s mandates requiring disclosure of climate-related risks and greenhouse gas emissions. The chapter explores the motivation behind both efforts and explains how the backlash against disclosure mandates led to challenges that in both cases have, to date, been successful. The success of the challenges has been due, in part, to distinctive features of the US regulatory structure.

At the same time, these features offer unique possibilities for experimentation, innovation and incremental regulatory reform. As the debate over corporate sustainability continues, we offer cautious optimism about the potential of the US to respond to its demands. 

Published in

Sustainable Finance and Corporate Law (Oxford University Press, Sofie Cools and Seraina Gruenewald eds.), forthcoming 2027

 

Key figures and timeline from WP 917/2026: Sustainable Finance and Corporate Law

 

  • S&P 500 with ESG report: 99% of largest US companies
  • Firms under California SB 253: ~2,600 revised down from 5,400
  • Anti-ESG state laws: 21 states enacted legislation
  • S&P 500 Scope 1&2 disclosure: 95% as of July 2024
Timeline: US sustainability disclosure initiatives, 2022–2026 Two tracks. SEC climate rule: proposed March 2022, final rule March 2024, challenged in Eighth Circuit, SEC withdrew March 2025, now in legal limbo. California: SB 253, SB 261 and AB 1305 enacted October 2023, Chamber of Commerce sued January 2024, injunction denied August 2025, Ninth Circuit stayed SB 261 November 2025, litigation ongoing. 2022 2023 2024 2025 2026 SEC rule Proposed (Mar 2022) Final rule adopted (Mar 2024) Multi-state suits → Eighth Circuit SEC withdraws defence (Mar 2025) Legal limbo California SB 253, SB 261 & AB 1305 enacted (Oct 2023) Chamber of Commerce lawsuit filed Injunction denied (Aug 2025) 9th Circuit stays SB 261 Ongoing litigation SEC milestone California milestone Legal challenge / setback

Source: Fisch & Miazad, Sustainable Finance and Corporate Law: Lessons from the US, ECGI Law Working Paper 917/2026 (April 2026). Data points: Governance & Accountability Institute (2025); SEC filings; court records. Access the full paper at ecgi.global

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