Judy Ansley served as assistant to the president and deputy national security advisor at the National Security Council (NSC) from 2008 until January 20, 2009. Ansley previously served as deputy national security advisor for Regional Affairs from 2007-2008, and began her service at the NSC in August 2005, as special assistant to the president and senior director for European affairs.

Prior to her service at the NSC, Ansley served for over 20 years in various positions in the U.S. Senate. From 1999-2005, Ansley was a member of the staff of the Senate Armed Services Committee, first as deputy staff director, and then as staff director. From 1995-1999, Ansley was national security advisor to Senator John Warner of Virginia. Prior to that, Ansley was on the staff of the Senate Select Committee on Intelligence, first as special assistant to the vice chairman, and then as minority staff director, responsible for issues related to the national intelligence budget and congressional oversight of the U.S. intelligence community. Ansley began her Senate career in 1983 on the professional staff of the Senate Armed Services Committee, advising Members on foreign policy issues. Prior to her work in the Senate, Ansley was a research assistant in the Foreign Affairs Division of the Congressional Research Service of the Library of Congress.

Ansley holds a master's degree from the Fletcher School of Law and Diplomacy and a bachelor's degree from Tufts University.