** FILE ** Former Sen. Alan K. Simpson (left) and former White House Chief of Staff Erskine Bowles, co-chairmen of the National Commission on Fiscal Responsibility and Reform, take part in a news conference on deficit reduction on Monday, Sept. 12, 2011, at the National Press Club in Washington. (AP Photo/Evan Vucci)

** FILE ** Former Sen. Alan K. Simpson (left) and former White House Chief of Staff Erskine Bowles, co-chairmen of the National Commission on Fiscal Responsibility and Reform, take part in a news conference on deficit reduction on Monday, Sept. 12, 2011, at the National Press Club in Washington. (AP Photo/Evan Vucci)