Gary served as Deputy Director and General Counsel of the White House Council on Environmental Quality (CEQ). In this position, he helped develop and guide the Obama Administration’s environmental, public health, and clean energy agenda, bringing business insights to government policy and coordinating policy across government agencies. He spearheaded negotiations that achieved the Obama Administration’s agreement to double motor vehicle fuel efficiency standards and significantly cut greenhouse gas emissions with the support of automobile manufacturers, states, labor unions, environmental and consumer groups, and Congress. Gary also led CEQ’s efforts to modernize permitting and environmental review under the National Environmental Policy Act, and counseled federal agencies on how to fulfill their NEPA obligations for dozens of high profile decisions and assisted in resolving NEPA controversies at numerous complicated sites.

Gary served as General Counsel of the U.S. Environmental Protection Agency and Counselor to the EPA Administrator during the Clinton Administration. He was a member of the Administrator’s senior policy team, setting regulatory, legislative, and communications strategy. He led efforts to design regulatory approaches to protect children’s environmental health, develop and defend new air quality and motor vehicle standards, defend EPA from Congressional oversight investigations, and protect iconic ecosystems such as the Everglades and Yellowstone National Park. He also authored climate change opinions that were later ratified by the U.S. Supreme Court in its landmark decision finding that greenhouse gases are pollutants under federal law.

Gary has also served as the chief legal officer, sustainability officer, and climate strategist for a variety of business organizations.