Walker returned to private practice in 2009 and, as an independent contractor, provides legal services to private clients and law firms. She also began a career as a published author of historical fiction under the pen name Regan Walker.
Personal life
Walker is divorced and has one son. She lives in San Diego.
Role in the Detainee Interrogation Controversy
On January 15, 2003, as a result of concern expressed by the Army that more techniques were needed to interrogate the terrorists being held at Guantanamo, the United States Secretary of DefenseDonald Rumsfeld ordered a review of what additional techniques might be available and permissible under law. Two days later, William J. Haynes, II, the General Counsel of the United States Department of Defense designated Walker as the head of a departmental working group tasked with implementing the Secretary's request. Walker established a committee of the senior lawyers in the Pentagon, both military and civilian, and a career-level working group having expertise in the substantive issues and additional techniques to be given legal and policy review. The next week, Walker received an extensive legal memorandum, written in 2001, from the Office of Legal Counsel of the U.S. Department of Justice, authored by John Yoo and signed by Jay Bybee, the head of the Office of Legal Counsel. She was advised by William J. Haynes, General Counsel of the Department of Defense, that this legal analysis would be controlling. As the two working groups proceeded to conduct their review, on January 23, 2003, General Counsel of the Navy Alberto J. Mora, a member of the senior legal group, reviewed a hard copy of that memorandum in Walker's office. This led to a disagreement between Mora and the senior legal group. Mora disagreed with the reasoning of the Department of Justice, whereas Walker agreed with Yoo's reasoning concerning the powers of the President. Walker encouraged discussion among the legal team and invited Yoo to the Pentagon to answer their questions, which he did on two occasions. Walker also encouraged Mora to share his views and to meet with General Counsel Haynes. Mora met with Haynes and circulated an opposing draft memo. Haynes did not accept Mora's views, nor did any members of the senior legal committee. On March 6, 2003, by a unanimous vote, all members of the senior legal group presented their recommendations for new techniques to Secretary Rumsfeld. These had been proposed by the technical working group and were subject to legal and policy review by the senior legal team. The recommendations to Secretary Rumsfeld stated that the reasoning behind the Department of Justice memorandum was sound, although the group expressly stated it did not need to rely upon the more far-reaching conclusions of the Justice Department's memorandum concerning the powers of the President. The final report was presented on April 4, 2003. Secretary Rumsfeld adopted the vast majority of the new techniques proposed. At the Administration's request, the Justice Department subsequently reviewed the Working Group's recommendations that were adopted by Secretary Rumsfeld and fully endorsed them.