Can Obama get his groove back?
Issued on: Modified:
Barack Obama plunges in the polls, as Americans express discontent with his handling of the Gulf of Mexico oil spill and the lackluster U-S economy. We bring you a special report on a group of young rappers in Mexico, who want to speak out about the all-powerful drug cartels, but who know that to do so is to risk their lives. And, it's a Tour de France that Lance Armstrong may want to forget. The former U-S cycling champion is lagging far behind in this year's race.