Erik C. Baptist, who served as the top attorney in the EPA’s chemicals office during the Trump administration, has joined the law firm Wiley Rein LLP.

Baptist will be a partner in the firm’s Environment & Product Regulation Practice.

He helped shape the Environmental Protection Agency’s policies and interpretation of the 2016 amendments to the Toxic Substances Control Act (TSCA) as the deputy assistant administrator for law and policy in the Office of Chemical Safety and Pollution Prevention from June 2018 until his recent departure.

Baptist joined the agency in June 2017 as senior deputy general counsel. Previous positions included work as an attorney at the American Petroleum Institute for six years, and two years in the enforcement division of the Federal Energy Regulatory Commission.