Director Nominee . Partner in the Washington, D.C. office of Gibson, Dunn & Crutcher LLP since 2013. She has experience in appellate, regulatory, and complex litigation matters. She is Co-Chair of both the firm's global Litigation Practice Group and Administrative Law and Regulatory Practice Group, and served on the firm's Executive Committee. Partner at Wiley Rein from 2004 to 2013. Associate Counsel to President George W. Bush in the White House Counsel's Office from 2001 to 2003. Law clerk for U.S. Supreme Court Justice Clarence Thomas from 1995 to 1996, and U.S. Court of Appeals for the Fourth Circuit Judge J. Harvie Wilkinson III from 1994 to 1995. Through these experiences, Ms. Walker will contribute legal, public policy, public company, leadership, and governance experience to the Board.