Steve Emerson’s invaluable Investigative Project on Terrorism has obtained a 2002 letter that Tom Cambell (now seeking the GOP nomination to become U.S. Senator from California) wrote on behalf of Sami al-Arian. The letter of support was written a year after al-Arian’s terrorist connections became widely publicized. Al-Arian, a top figure in the murderous Palestinian Islamic Jihad organization, was convicted of conspiring to provide material support to terrorism in 2006.