Plot: 2011/09/20 Headlines: Yemen: 9 Killed as Government Escalates Deadliest Period in Eight-Month-Old Uprising; President Obama Unveils Plan to Cut $3 Trillion from Deficit; "Don't Ask, Don't Tell" Prohibition of Openly Gay Military Servicemembers Expires; Study: 37 Percent of Young Families with Children Were Living in Poverty Last Year; Israel Proposes Netanyahu, Abbas Meeting; Former Mexican President Sued for War Crimes Stemming from 1997 Massacre; Former FBI Informants Link U. S