Alejandra Nunez is the Deputy Assistant Administrator for Mobile Sources, Office of Air and Radiation at the U.S. Environmental Protection Agency. Prior to being appointed to her current position at the EPA, she served as a senior attorney at the Sierra Club’s Environmental Law Program, where her work focused on litigation and regulatory advocacy on federal greenhouse gas and corporate average fuel economy standards for light- and heavy-duty vehicles, carbon dioxide standards for new and existing power plants, state transportation and clean energy policies, and the integration of environmental justice in climate policy. Before Sierra Club, Ale worked as associate counsel at the World Bank’s Legal Vice Presidency, where she advised on public-private partnerships in the energy and water infrastructure sectors, and was also an associate at Morrison & Foerster, where she represented clients on public trust issues, carbon sequestration projects, and conservation easements.