This is what I read. ""What are the charges?
This June Usada charged Armstrong with drug trafficking and using banned steroids, the red blood cell booster erythropoietin (EPO), and human growth hormone as well as illegal blood transfusions dating back to 1986.
What evidence does Usada have?
It claims to have incriminating blood samples taken in 2009 and 2010 – the last two years of Armstrong's cycling career – and testimonies from up to 10 former team-mates.
Hasn't Armstrong been implicated in doping scandals before?