Former U.S. Sen. Tom Daschle (D-SD) testifies before the Senate Health, Education, Labor and Pensions Committee hearing about his confirmation for Secretary of Health and Human Services on Capitol Hill in Washington, in this file photo from January 8, 2009. Daschle withdrew his nomination as President Barack Obama's health secretary February 3, 2009, saying he did not want to be a distraction after paying $140,000 in back taxes.