The Olympic comitee is under US control, the same way the United nations, and most recently trying to control FIFA. The US is basically a subtle dictator that tries to police the world and try to take the high moral ground everytime. They are the propaganda masters of the world.
Doping is a decent part of their sucesss.
Just take that 16 year old chinese swimmer in london...The US media wouldnt stop with the media propaganda about her doping until the poor girl submitted and lost interest in her own sport.
While the media celebrates every 16 year old american athelete and an obviously doping micheal phelps.
America is a sublte dictator, tbh...A very cunning nation that likes to control the world through lies and decepting.