|Capitalize as a title when it immediately precedes a personal name; otherwise
lowercase, including appositives.
President Barack Obama but U.S. president Barack Obama
President-elect Barack Obama; the president-elect
president of the United States, the president, a president, his presidency
president of the Confederacy
President and CEO Gary E. Knell
president of the National Geographic Society, the president, his presidency
president of France, the president
Jane E. Vessels, president of CBS; President Vessels; the president of CBS
See also: Vice President, Vice Presidency, vice presidential.