The International Olympic Committee (IOC) criticized Chicago’s bid for the 2016 Summer Olympics because of concerns over funding, according to USA Today. Olympics officials found some faults with all four cities bidding for the 2016 games, Chicago, Toyko, Madrid and Rio de Janeiro, but Chicago’s bid drew particular scrutiny because it was the only one of the four where government did not guarantee financial matters. Chicago Mayor Richard Daley has said that the city would consider signing a guarantee for the estimated $4.8 billion operating budget. If successful, the Chicago bid would bring the summer games back to the U.S. for the first time since the Atlanta Games in 1996.