LAWYER PROFILE
Stacey Halliday

Stacey Halliday

USA 2026

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Ranked in 1 practice area

About

Provided by Arnold & Porter

USA

Practice Areas

Stacey Halliday’s practice draws on her diverse litigation and regulatory experience in advising clients on issues pertaining to environmental justice, compliance, enforcement, and corporate social responsibility issues. With particular experience in the energy and technology sectors, she has helped lead critical environmental audits, investigations, and enforcement matters.

Stacey represents electronics and textile industry clients in product regulatory compliance and global supply chain issues, including electronic-right-to-repair and product-labeling requirements. She also advises on energy transition and climate change matters, contaminated sites, as well as highly technical sustainability disclosures.

As a senior member of the Environmental Protection Agency’s oversight response team, Stacey provided legal and strategic guidance on congressional investigation and hearing preparation. She played a key role in the EPA’s incident response and crisis management of the Flint drinking water crisis, the Gold King Mine spill, and the legal defense of the Clean Power Plan and Clean Water Rule. While serving as Special Counsel in the EPA’s Office of General Counsel, Stacey coordinated the agency’s response to the U.S. Commission on Civil Rights investigation of the EPA’s Title VI program.

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Environment - District of Columbia

Band 6
Band 6

Individual Editorial
Stacey Sublett specializes in environmental justice, compliance and corporate social responsibility, leading audits, investigations and enforcement matters.

Strengths

Provided by Chambers

  • Stacey Halliday is a phenomenal lawyer; she is very level-headed and reasonable in strategy and advice.

    EnvironmentChambers Guide to the USA
  • Stacey is a really outstanding.

    EnvironmentChambers Guide to the USA

Ranked Individuals at Arnold & Porter (170)

California

Colorado

District of Columbia

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