You seem to misunderstand what the thrust of the federal investigation is about. It's not so much about doping as other laws broken in relation to the doping. Fraud, tax evasion, racketeering, misuse of federal monies. The reality is that the feds are trying to find the source from where the drugs flow and if Armstrong used federal monies to illegally advance his career.

Landis has already had his TDF victory taken away along with being financially bankrupt and his life destroyed. All the while Lance gets away with a more sophisticated doping and drug method and is sitting on millions of dollars and continues to ride the tide of success and positive public opinion when there is enough evidence against him to convict him in any court of law. So you think that they should continue to go after Landis when he is helping the investigation?