Stacey Halliday

Stacey Halliday
Partner, Arnold & Porter, Washington, DC

Stacey Halliday advises clients on environmental compliance due diligence, environmental enforcement, corporate social responsibility, non-financial reporting, and environmental justice. Drawing on her diverse litigation and regulatory experience in government and private practice, Stacey provides an array of corporate social responsibility and sustainability services to help clients meet requirements and demand for ethical, sustainable practices clients—including circular economy, supply chain, and environmental justice (EJ) initiatives. Stacey is a leader of the firm’s Environmental Justice practice and works with clients in the energy and technology sectors to develop comprehensive, company-wide EJ policies, programs, and implementation frameworks. Stacey has written and spoken on corporate social responsibility, sustainability, and EJ issues, including authoring a chapter on the United Nations Sustainable Development Goals for the International Bar Association’s text on Corporate Social Responsibility.

Stacey re-joined B&D in February 2017, immediately following her political appointment as Special Counsel in the Environmental Protection Agency's (EPA) Office of General Counsel (OGC), where she worked directly with the General Counsel to coordinate OGC’s internal activities, in addition to serving as OGC’s primary liaison for external federal, state and private sector stakeholder engagement. Stacey also served as a senior member of the EPA oversight response team, where she provided legal and strategic guidance on congressional investigation and hearing preparation (including for the EPA Administrator and Deputy Administrator), White House and interagency coordination, and crisis management and strategic communications. In this capacity, Stacey played a key role in the Agency’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.

During a temporary move overseas August 2019-May 2021, Stacey founded Global Environmental Solutions Consulting, LLC and worked closely with B&D as an independent environmental consultant.

Stacey received her A.B. from Harvard University in Political Science and French and her J.D. from Howard University.