1. After the 'apology tour' the rest of the world now views the United States as a weak, sniveling country, and feel that they are free to piss all over the USA without fear of reprocussion.
2. Obama's "Walk outside of my family home" speech made it clear to the IOC that Obama wanted to make the Olympics about him, and not the athletes.
3. Michelle's 'Take no prisoners' comment made it clear to the IOC that the Obama's are arrogant people who feel they are owed the Olympics because they are the Obama's - The IOC decided that they needed bitchslapping as a response.
4. If the Olympics were held in Chicago, the IOC would feel compelled to add Grifting, Gangland Freestyle Fighting, and the 2x4 Beatdown to the Summer Olympic repertoire. They would rather not be in that position.