Lance Armstrong... greatest doper there was or ever will be

The Federal investigation was a criminal fraud investigation with a different level of proof required for a conviction. They also had to prove USPS monies were used for illegal purposes cos doping isn't illegal.

Are you sure the doping substances aren't illegal? Importing steroids into Australia, for example, is a criminal offence. Lefranceland probably has similar laws - I'm sure Willy Voet's book spoke of illegal substances rather than just "gear that's banned in sport".