
** FILE ** Then-Sen. Joe Lieberman speaks as (not shown) Homeland Security Secretary Janet A. Napolitano, FBI Associate Deputy Director Kevin Perkins and National Counterterrorism Center Director Matthew G. Olsen testify on homeland threats and agency responses before the Senate Homeland Security and Governmental Affairs Committee on Capitol Hill in Washington on Wednesday, Sept. 19, 2012. (Andrew Harnik/The Washington Times)

Sen. Thomas R. Carper (right), Delaware Democrat, succeeds the now-retired Sen. Joe Lieberman, Connecticut independent, as chairman of the Senate Homeland Security and Governmental Affairs Committee. The ranking Republican is also new. (Associated Press)

Sen. Thomas R. Carper (right), Delaware Democrat, succeeds the now-retired Sen. Joe Lieberman, Connecticut independent, as chairman of the Senate Homeland Security and Governmental Affairs Committee. The ranking Republican is also new. (Associated Press)

Sen. John Kerry, D-Mass., stands with Sen. Joe Lieberman, I-Conn., as they attend with President Barack Obama, not pictured, the funeral service for the late Sen. Daniel Inouye, D-Hawaii, at the Washington National Cathedral, Friday, Dec. 21, 2012. (AP Photo/Charles Dharapak)

U.S. Sen. Joseph Lieberman, I-Conn., top right, Rep. Rosa DeLauro, D-Conn., left, Sen-elect Chris Murphy, center, and Lt. Gov. Nancy Wyman, right, wait for the arrival of President Barack Obama before the start of an interfaith vigil for the victims of the Sandy Hook Elementary School shooting inside the Newtown High School auditorium in Newtown, Conn., Sunday night, Dec. 16, 2012. (AP Photo/The Hartford Courant, Stephen Dunn, Pool)

**FILE** Sen. Joseph Lieberman of Connecticut speaks Dec. 10, 2012, during a news conference at the state capitol in Hartford, Conn. (Associated Press)

**FILE** Sen. Joseph Lieberman of Connecticut speaks Dec. 10, 2012, during a news conference at the state capitol in Hartford, Conn. (Associated Press)

Sens. Susan Collins, left, the ranking member, and Joe Lieberman, chair of the Homeland Security and Governmental Affairs Committee, talk with the media about a briefing their committee was given Thursday, Nov. 29, 2012 about the Benghazi attack. Sen. Lieberman said that they now know more than they did, but they still don't feel like they have all the information. (Barbara L. Salisbury/The Washington Times)

Sens. Susan Collins, left, the ranking member, and Joe Lieberman, chair of the Homeland Security and Governmental Affairs Committee, talk with the media about a briefing their committee was given Thursday, Nov. 29, 2012 about the Benghazi attack. Sen. Lieberman said that they now know more than they did, but they still don't feel like they have all the information. (Barbara L. Salisbury/The Washington Times)