Whatever, there is plenty of evidence that the girls are underage. Do some research so you know what you're talking about.
The answer is YES, the IOC will not do anything about it even though there is a lot of very clear evidence that He Kexin and Jiang Yuyuan are not 16. So what if they provided "passports"? How hard it is to print up new passports, birth certificates, etc. and hide/destroy the old ones in this Communist nation? Think about what a huge deal this is to China and the lengths they have gone to make this Olympics a success for them. The IOC is ignoring the many public records that these gymnasts are underage, and they are doing nothing more about it which is appalling. Official Web sites in China showing documents of these girls' ages are now mysteriously inaccessible, official media documents and the equivalent of press releases FROM THE GYMNASTICS PROGRAM available to Chinese media outlets that give biographical information on all the athletes have also disappeared, and information in publically-accessible news stories by the Chinese media has been recently changed. Just the "copies of the passports" are presented as proof to the IOC, and they are ignoring all evidence to suggest the passports are not real. China is doing everything they can to hide the truth because it would not only be a HUGE embarrassment, but every Chinese Olympic success would be overshadowed by this scandal, and that is what the world would remember about China in these Olympics. They have put forth a lot of effort to display a certain image to the world (even going so far as to kick out the young girl that sang in the Opening Ceremonies because she wasn't cute enough). This would destroy all the work they put in and they are not about to let that happen. Although there has already been many cases of doping already uncovered, for the sake of the reputation of the Olympics, the IOC can't afford a scandal this big by the host nation. There are many factors as to why they aren't pursuing this, and this is a big one.
PS - So true that the US we would be ALL over this. It's a travesty that this is being allowed.
I've been researching this from before the Olympics began, and I have a friend that is a media correspondent in Beijing that I have conversed with. The NY Times has done some particularly good stories about this. Also check out this artcle: http://www.huffingtonpost.com/david-flumenbaum/scandal-of-the-ages-docum_b_118842.html