Roger Hertog Program on Law and National Security | Columbia Law School

Mary DeRosa

Former Deputy White House Counsel and Legal Adviser, National Security Council

Mary DeRosa currently serves as Alternate Representative of the United States to the 66th UN General Assembly.

DeRosa served as Deputy White House Counsel and National Security Council Legal Adviser from January 2009 until June 2011. Before that, she was Chief Counsel for National Security for the Senate Judiciary Committee, working for the Chairman, Senator Patrick Leahy. She has also been a Senior Fellow at the Center for Strategic and International Studies, served on the staff of the Clinton Administration National Security Council as Legal Adviser and Deputy Legal Adviser, and was Special Counsel to the General Counsel at the Department of Defense. Before joining the government, Ms. DeRosa was in private practice at Arnold & Porter.