Mary Jo White was sworn in this morning as the 31st Chair of the SEC.

Chairman White comes to the SEC with decades of experience as a federal prosecutor and securities lawyer. She was nominated to be SEC Chair by President Barack Obama on Feb. 7, 2013, and confirmed by the U.S. Senate on April 8.

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“It is an honor to lead the talented and dedicated SEC staff on behalf of America’s investors and markets,” said Chairman White.

Chairman White specialized in prosecuting complex securities and financial institution frauds and international terrorism cases when she served as the U.S. Attorney for the Southern District of New York from 1993 to 2002.

Under her leadership, the office earned convictions against the terrorists responsible for the 1993 bombing of the World Trade Center and the bombings of American embassies in Africa. She is the only woman to hold the top position in the 200-year-plus history of that office.

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Prior to becoming the U.S. Attorney for the Southern District of New York, Chairman White served as the First Assistant U.S. Attorney and later Acting U.S. Attorney for the Eastern District of New York from 1990 to 1993. She previously served as an Assistant U.S. Attorney for the Southern District of New York from 1978 to 1981 and became Chief Appellate Attorney of the Criminal Division.

After leaving her U.S. Attorney post, Chairman White became chair of the litigation department at Debevoise & Plimpton in New York, where she led a team of more than 200 lawyers. Chairman White previously was a litigation partner at the firm from 1983 to 1990 and worked as an associate from 1976 to 1978.

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Chairman White is a fellow in the American College of Trial Lawyers and the International College of Trial Lawyers. She also has served as a director of The NASDAQ Stock Exchange and on its executive, audit, and policy committees. Chairman White is a member of the Council on Foreign Relations. Chairman White was administered the oath of office by SEC Secretary Elizabeth M. Murphy.