Former California Gov. Arnold Schwarzenegger, left, and moderator Cokie Roberts listen as Sen. John McCain, R-Ariz., speaks at the inaugural symposium sponsored by the Schwarzenegger Institute for State and Global Policy, at the University of Southern California in Los Angeles Monday, Sept. 24, 2012. (AP Photo/Reed Saxon)

Associated Press
Former California Gov. Arnold Schwarzenegger, left, and moderator Cokie Roberts listen as Sen. John McCain, R-Ariz., speaks at the inaugural symposium sponsored by the Schwarzenegger Institute for State and Global Policy, at the University of Southern California in Los Angeles Monday, Sept. 24, 2012. (AP Photo/Reed Saxon)
Former California Gov. Arnold Schwarzenegger, left, and moderator Cokie Roberts listen as Sen. John McCain, R-Ariz., speaks at the inaugural symposium sponsored by the Schwarzenegger Institute for State and Global Policy, at the University of Southern California in Los Angeles Monday, Sept. 24, 2012. (AP Photo/Reed Saxon)
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