Mary McCormackMary McCormack is an actor, producer, and activist who played Deputy National Security Advisor Kate Harper on The West Wing. A Tony-nominated Broadway actress, she is known for a diversity of roles across film, television, and theatre. Mary isan outspoken advocate for a whole host of causes, from social justice and women's rights to veterans' issues and criminal justice reform. She lives in Los Angeles with her husband and three daughters. Read More Read Less