For Obama, An Unsuccessful Campaign By PETER BAKER October 2, 2009 COPENHAGEN — President Obama not only failed to bring home the gold, he could not even muster the silver or bronze. A dramatic 20-hour mission across the ocean to persuade the International Olympic Committee to give the 2016 Summer Games to Chicago proved such a miscalculation that his adopted hometown finished fourth of four candidate cities. Rarely has a president put his credibility on the line on the world stage in such a personal way and been slapped down so sharply in real time. While Chicago may have lost...