AB, Oberlin College, 1973; Doctor of Philosophy, University of Wisconsin, 1979.
Price analyst, Council on Wage and Price Stability, Washington, 1975-1976; economist, United States Geological Survey, Reston, Virginia, 1979-1981; economist, antitrust division, unites states department Justice, Washington, 1978-1979, 81-84; assistant chief, regulatory economics section, antitrust division, unites states department Justice, Washington, 1984-1991; chief competition policy section, anti-trust division, United States Justice Department, Washington, since 1991. Lecturer Georgetown University, Washington, 1984.
Member Oberlin (Ohio) College Alumni Board, 1980-1983, board of trustees, 1973-1976;secretary Concerned Citizens for Black Adoption, Washington, 1980-1982. Member American Economic Association, Royal Economic Society, Industrial Organisation Society.
Married Karen Denise Johnson, September 6, 1975. Children: Rosa Eleanor, Jessica Erin, TimothyMalcolm.