and the question is, what damage to Obama?
I'll be honest. Probably not much damage at all. While I don't think that the President of the United States should make an appearance before the IOC to beg for an award of the games, it was in essence a no-lose situation. If Chicago got the games, the Obama would look like a hero, if Chicago didn't get the games, he loses very little.
And for all those who wonder, I don't think the violence in recent days in Chicago had any impact on the bidding process. The winner, Rio de Janeiro, is a good selection, although I would have preferred to see Madrid get the games.
Brazil is on a run of hosting international competitions. Brazil will host the 2014 World Cup and now Rio getting the Olympics, Brazil will be seeing massive improvements in infrastucture and tourism.