FILE - In this Thursday, Dec. 10, 2009 file photo, from left, Sen. Lindsey Graham, R-S.C., Sen. Joseph Lieberman, I-Conn., and Sen John Kerry D-Mass., take part in a news conference on Capitol Hill in Washington. Sen. Lieberman strongly rebutted charges Monday, Dec. 14, 2009 that he flip-flopped to oppose the expansion of Medicare as part of health care legislation, as Democratic leaders struggled to get President Barack Obama's top domestic initiative on track for passage by Christmas.
(AP Photo/Pablo Martinez Monsivais, File)