Before first lady Michelle Obama set off for this Danish capital to lead the charge for Chicago's valiant -- but ultimately unsuccessful -- bid for the 2016 Olympics, she joked that the last-minute lobbying effort would be "a battle." "We're going to win," Obama said. "Take no prisoners." At a G-20 dinner in Pittsburgh, she teased Brazil's first lady, Marisa Leticia da Silva, that when the time came for the last-ditch arguments for the Olympic and Paralympic Games coming to Chicago -- over competitors Rio de Janeiro, Tokyo and Madrid -- the "gloves are off." Back in September, that all...