Sen. Bob Corker (R-Tenn.) was named ranking member of the Aging Committee on Tuesday. “I believe this appointment will provide our staff with a venue and increased resources to find fiscally responsible solutions to the challenges facing aging Americans — health care reform, the solvency of Social Security and Medicare, as well as savings, retirement and financial policies that continue to impact all Americans, including those who are aging,— Corker said in a statement.Corker, who was elected in 2006, also serves on the Banking, Housing and Urban Affairs, Energy and Natural Resources, and Foreign Relations committees. He was elevated to ranking member on the Aging Committee after Sen. Mel Martinez (R-Fla.), who previously served in that role, resigned. Martinez stepped down on Sept. 9 and was replaced by Sen. George LeMieux (R). Florida Gov. Charlie Crist (R) tapped LeMieux, a former staffer, as a placeholder for the post, which Crist is seeking in 2010.