Lewis Alexander serves as Research Analyst of Citigroup Inc., Research Division. Mr. Alexander is joining the U.S. Treasury to work on domestic financial issues, counseling Secretary Timothy Geithner. Mr. Alexander served as Chief Economist of Citigroup, Inc. until March 2009. Before joining Citi in 1999, he worked in the division of international finance of the Federal Reserve Board. He was also the Commerce Department's chief economist.