US The International Olympic Committee has raised doubts about the financing of the 2016 Olympics bid by Chicago, the frontrunner among the four cities competing to host the games.
A month before the IOC meets in Copenhagen to choose the host city for the 2016 games, a technical analysis of the bids expresses concern that Chicago has failed to provide a blanket guarantee to cover any financial shortfall in its $4.8bn (€3.4bn, £3bn) budget.
