Plot: 2011/09/08 Headlines: Gaddafi Denies Libya Departure, Urges More Fighting; Western Firm Negotiated to Arm Gaddafi Regime Before Uprising; Syrian Forces Kill at Least 20 in Homs in Ongoing Crackdown on Protest Movement; GOP Contenders Clash in Debate; Perry Blasts Social Security as "Ponzi Scheme"; Obama to Deliver Jobs Speech; Some GOP Lawmakers Won't Attend; Nearly 100 Ex-Staffers for Congressional "Super Committee" Members Now Working as Lobbyists; Ex-CIA Lawyer: Obama Changed "Virtually Nothing" from Bush Admin on Terror Policies; U. S