When control of the Senate switched from Republicans to Democrats in June 2001, Lieberman became Chairman of the Homeland Security and Governmental Affairs Committee, with oversight responsibilities for a broad range of government activities. He was also a member of the Environment and Public Works Committee and chair of its Subcommittee Clean Air, Wetlands and Private Property; the Armed Services Committee, where he chaired the Airland Subcommittee and sat on the Subcommittee on Emerging Threats and Capabilities; and the Small Business Committee. When Republicans gained control of the Senate in January 2003, Lieberman resumed his role as ranking minority member of the committees he had once chaired.  In 2002, as Chairman of what was then known as the Senate Governmental Affairs Committee, Senator Lieberman led the fight to create a new Department of Homeland Security. One month after the terrorist attacks on September 11, 2001, he introduced legislation to reorganize the federal government to better protect the American people from terrorism and natural disasters and steered a bipartisan plan through his committee. After months of opposing the plan, the White House eventually endorsed the concept. Legislation that passed Congress in 2002 created a department incorporating key organizational elements Senator Lieberman advocated.  In 2006, Senators Lieberman and Collins drafted legislation to reshape the Federal Emergency Management Agency into an agency that would more effectively prepare for and respond to catastrophes, including natural disasters and terrorist attacks. The legislation elevated FEMA to special status within the Department of Homeland Security, much like the Coast Guard and designated the head of FEMA to be the President's point person during an emergency. The bill also called for the reunification of the preparedness and response functions within FEMA, giving it responsibility for all phases of emergency management. And the measure strengthened FEMA's regional offices, creating dedicated interagency "strike teams" to provide the initial federal response to a disaster in the region. The legislation passed Congress in September 2006. As the 2007 hurricane season approached, Lieberman held an oversight hearing on implementation of the FEMA reforms on May 22, 2007. He urged FEMA to implement the reforms at a quicker pace.  Lieberman actively oversaw the government response to the H1N1 influenza (swine flu) pandemic and held four hearings on the subject in 2009, including one in Connecticut. He has continually pressed the United States Department of Health and Human Services to distribute vaccines and antiviral medications at a quicker pace and to streamline the process.  In the 110th Congress, Lieberman was Chairman of the Homeland Security and Governmental Affairs Committee, which is responsible for assuring the efficiency and effectiveness of the Federal Government. In addition, he was a member of the Environment and Public Works Committee; Senate Armed Services Committee, where he was Chairman of the Subcommittee on Air Land Forces and sat on the Subcommittee on Emerging Threats and Capabilities; and the Small Business Committee.

Answer this question "What was some of his responsibilities there?" by extracting the answer from the text above.
One month after the terrorist attacks on September 11, 2001, he introduced legislation to reorganize the federal government to better protect the American people from terrorism