Homeland Security Chief Napolitano Discusses Newtown Shootings

WASHINGTON, DC - DECEMBER 19: Senate Homeland Security and Governmental Affairs Committee Chairman Sen. Joseph Leiberman (I-CT) delivers remarks after receiving the Homeland Security Department Secretary's Award during a ceremony at the at the U.S. Citizenship and Immigration Services December 19, 2012 in Washington, DC. Lieberman, who is retiring after 24 years in the U.S. Senate, was recognized by Napolitano for his "advocacy and leadership on behalf of the Department of Homeland Security and the country and for helping to ensure the safety and security of the American people." (Photo by Chip Somodevilla/Getty Images)