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Stacey Sublett Halliday Joins Arnold & Porter’s Environmental Practice in Washington, D.C.

January 22, 2024

WASHINGTON, D.C., January 22, 2024 — Arnold & Porter announced today that environmental justice attorney Stacey Sublett Halliday, a former Special Counsel in the Office of General Counsel (OGC) at the U.S. Environmental Protection Agency (EPA), has joined the firm’s Environmental practice as a partner, resident in the firm’s Washington, D.C. office.

Richard M. Alexander, Chairman of Arnold & Porter, said, “Stacey’s litigation and regulatory experience in the private sector and with the EPA will be a great asset to the firm’s leading Environmental practice. Her extensive background in environmental justice and ESG issues will help our clients mitigate risk and successfully navigate the novel and constantly evolving environmental landscape.”

Brian Israel, chair of the firm’s Environmental practice group and co-lead of the firm’s Environmental, Social, and Corporate Governance (ESG) working group, added, “Stacey has in-depth knowledge of the issues related to environmental justice, which will be invaluable to the firm as we continue to grow our environmental practice in the emerging areas of environmental justice, ESG counseling, and energy transition advocacy. More broadly, Stacey’s environmental skillset will be a tremendous asset our to our clients.”

Halliday focuses her practice on environmental justice issues, while also advising clients more broadly on environmental compliance, enforcement, and corporate social responsibility. She has particular experience in working with clients in the energy and technology sectors. As Special Counsel in the OGC at the EPA, she served as primary liaison for external federal, state, and private sector stakeholder engagement. She also served as a senior member of the EPA oversight response team, providing legal and strategic guidance on congressional investigation and hearing preparation, White House and interagency coordination, and crisis management and strategic communications. She also played a key role in the EPA’s incident response and crisis management of such diverse matters as the Flint drinking water crisis, the Gold King Mine spill, and the legal defense of the Clean Power Plan and Clean Water Rule.

In joining the firm, Halliday said, “Arnold & Porter has an incredibly strong environmental practice, which I’ve developed tremendous respect for throughout my career. I look forward to growing my environmental justice practice with this team of talented and knowledgeable colleagues who consistently demonstrate their dedication and passion for environmental issues.”

Halliday earned her J.D. from Howard University and her A.B. from Harvard University.

About Arnold & Porter

Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues. With over 1,000 lawyers practicing in 15 offices worldwide, we offer deep industry experience and an integrated approach that spans more than 40 practice areas. Through multidisciplinary collaboration and focused industry experience, we provide innovative and effective solutions to mitigate risks, address challenges, and achieve successful outcomes.