In 2008 , Feinstein joined the Brookings Institution as Visiting Fellow in Foreign Policy Studies and was was national security director for the Hillary Clinton presidential campaign and was later an outside foreign policy advisor to the Barack Obama campaign .
In 2008 , Feinstein joined the Brookings Institution as Visiting Fellow in Foreign Policy Studies . 
 From 2007 to 2008 he was national security director for the Hillary Clinton presidential campaign and was later an outside foreign policy advisor to the Barack Obama campaign .