 As ranking member of the Committee from 2003 to 2007, he played a leading role in the passage of homeland security legislation such as the Intelligence Reform and Terrorism Prevention Act, the SAFE Port Act, and the Post-Katrina Emergency Management Reform Act, and in the investigation of the Bush administration's response to Hurricane Katrina.In January 2007 he became Chairman again of the Senate Homeland Security and Governmental Affairs Committee, where he led efforts to pass the Implementing Recommendations of the 9/11 Commission Act of 2007.Lieberman supports the Alberto Gonzales policy memo on the application of provisions of the Geneva Conventions.