You guys are terribly naive. It amazes me that nearly no one realizes the problem with TUE. There is a huge grey area there and athletes can easily buy doctors to diagnose a fake injury requiring some TUE to use banned PEDs. It is actually a very smart way to dope "legally".
One very telling exemple: Salbutamol, a banned substance, was originally designed to treat asthma and is not banned if the athlete claims a medical exemption for asthmatic conditions. Well, guess what? 20% of US male athletes who competed in the 1996 OG were "treated for asthma".

In some sports such as cross country skiing during some edition of the Winter OG, the percentage of athletes pretending to suffer from asthma was as high as 60%.
LOL
Just mega-LOL