Imperial Earth is a novel written by Arthur C. Clarke, and published in time for the U.S. bicentennial in 1976 by Ballantine Books. The plot follows the protagonist, Duncan Makenzie, on a trip to Earth from his home on Titan, ostensibly for a diplomatic visit to the U.S. for its 500th birthday, but really in order to have a clone of himself produced.
Read more about Imperial Earth: Plot Summary, Major Themes