He has been charged on various counts by the USADA. He has until Saturday to either accept the charges (and lose his titles & prize money) or challenge them at an independent 3 person tribunal (which he argues is far from independent). To avoid both avenues, he filed an injunction against USADA saying they were unconstitutional but this was rejected by a US judge. He can refile that complaint if he so chooses to attempt to avoid the charges.