Former U.S. President George H.W. Bush shakes hands with San Francisco Mayor Gavin Newsom during the opening ceremony of the Presidents Cup in San Francisco

Former U.S. President George H.W. Bush (2nd-L) shakes hands with San Francisco Mayor Gavin Newsom, as United States team captain Fred Couples (L) and International team captain Greg Norman watch, during the opening ceremony of The Presidents Cup at Harding Park Golf Course in San Francisco, California on October 7, 2009. UPI/Kevin Dietsch