1. Donna Shalala is the longest-serving secretary of health and human services (HHS) in U.S. history (January 1993 to the present). With a fiscal year 1999 budget of approximately $381 billion and nearly 58,000 employees, HHS administers a wide variety of programs, including Medicare, Medicaid, federal welfare, and children's programs. Uwe Reinhardt is the James Madison Professor of Political Economy at Princeton University's Woodrow Wilson School of Public and International Affairs.