Protecting the pensions of working Americans : lessons from the Enron debacle : hearing before the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Seventh Congress, first session, on examining the impact of the collapse of Enron Corporation on its 401(k) pension plan investors and the Department of Labor's role in enforcement and regulation under the Employee Retirement Income Security Act (ERISA), focusing on related pension plan reform proposals, February 7, 2002.