WASHINGTON - Governmental Affairs Committee Chairman Joe Lieberman, D-Conn., has signed a letter to Comptroller General David Walker, along with three other senators, in support of the General Accounting Office's investigation into the deliberations of the Bush Administration's energy task force. The letter, dated January 22, 2002, is also signed by Senators Byron Dorgan, D-N.D., Carl Levin, D-Mich., and Ernest Hollings, D-S.C.