David S. Mao

David S. Mao
Librarian of Congress Acting
Incumbent
Assumed office October 1, 2015
President	Barack Obama
Preceded by	James Billington
Personal details
Born	New York City, New York, U.S.
Alma mater	George Washington University Georgetown University Catholic University of America

David Mao (Chinese: 茅以森; pinyin: Máo Yǐsen) is an American law librarian. Since the September 30, 2015 retirement of James H. Billington, Mao is the acting Librarian of Congress.

Early life

David S. Mao was born in New York City and grew up in Lawrenceville, New Jersey where he attended the Lawrenceville School. He completed his undergraduate studies at The George Washington University, and went on to earn first a law degree from Georgetown University Law Center and then a library and information sciences master's degree from The Catholic University of America.

Career

Mao came to the Library of Congress in 2005, when he was hired by the American Law Division in the Congressional Research Service (CRS). Before arriving at CRS, he held positions at the Georgetown University Law Library and within the research library of the international law firm of Covington and Burling LLP. He also was an adjunct professor at the University of Maryland–College Park. In 2010, he joined the Law Library of Congress as its first Deputy Law Librarian, and then became the 23rd Law Librarian of Congress January, 2012. On January 12, 2015 Mao was appointed to the Deputy Librarian of Congress office, by then-Librarian of Congress James Billington.

As Law Librarian, Mao managed the operation and policy administration of the Law Library of Congress, which contains the world’s largest collection of legal materials and serves as the leading research center for foreign, comparative, and international law. During his tenure as Law Librarian, he brought to the Library a copy of the 1215 Magna Carta for an historic exhibition on the eve of the charter's 800th anniversary.