FILE - In this May 22, 2009 file photo President Barack Obama salutes Sen. John McCain, R-Ariz., acknowledging him during the United States Naval Academy graduation ceremony in Annapoli

 

              FILE - In this May 22, 2009 file photo President Barack Obama salutes Sen. John McCain, R-Ariz., acknowledging him during the United States Naval Academy graduation ceremony in Annapoli
FILE - In this May 22, 2009 file photo President Barack Obama salutes Sen. John McCain, R-Ariz., acknowledging him during the United States Naval Academy graduation ceremony in Annapolis, Md. At right is Naval Academy Superintendent Vice Adm. Jeffrey L. Fowler. Obama and McCain, the Republican he defeated in his first White House campaign, have become one of Washington's most talked about odd-couple pairings. And like any successful business deal in the nation's capital, the relationship works because it has benefits for both men. (AP Photo/Charles Dharapak, File)