President Barack Obama has pledged to overhaul the health care system in order to cut down on the 45 million Americans who don't have health insurance -- an initiative that his team once estimated would cost $65 billion but experts predict could run much higher. Meanwhile, Medicare -- the government-run health-care program for seniors -- is increasingly eating up a large chunk of the federal budget. And the trustees who compile an annual report examining the financial solvency of Medicare and Social Security have repeatedly said Medicare can't survive in its current state.

Michael Leavitt
BIO: Michael Leavitt became the Secretary of the U.S. Department of Health and Human Services in January 2005. The three-time governor of Utah also served as the head of the Environmental Protection Agency, and chairman of the National Governors Association, Western Governors Association and Republican Governors Association. The father of five was the president and CEO of a regional insurance firm before entering public services.