Marion Mattingly is well known in Washington, D.C. for her commitment to juvenile justice and her tireless efforts to push for the best policies for youth—in Congress, in policy circles in and out of the government, and to whomever will listen. Marion has extensive knowledge of juvenile justice issues ranging from policing to conditions of confinement, and is well known to both sides of the aisle. Marion is a founder and the first Executive Director of the Coalition for Juvenile Justice. She has also been involved for many years with the National Campaign to Stop Violence. She is currently the Washington editor for Juvenile Justice Update, a member of the American Bar Association Criminal Justice Section and Juvenile Justice Committee, and has been involved with a range of youth-serving organizations including the National Juvenile Defender Center and Big Brothers Big Sisters of America.