"H.R. 1955 passed by a 404-6 margin on Oct 23, 2007. On Nov. 6, 2007, the Subcommittee on Intelligence, Information Sharing and Terrorism Risk Assessment held a one hour plus hearing. Witnesses from "think tanks" elaborated on the need for the legislation. (Full video) Mark Weitzman was highly specific in portraying the Internet as a major source of violent radicalization. He showed slides of Internet web sites; he included some domestic political groups with very high visibility, and defined the threats as net-based communication and proselytizing. (Video of Weitzman testimony)"