I can tell you that Lance had help from above in France.
Sarkozy, a big fan of his asked police officers to stop a perquisition in the US postal hotel rooms during the 2005 tour, he was minister of the interior back then (meaning the highest police authority in france). Just one phonecall and he got away with it, again.
If all his teammates from back then have admitted what was going on in the US postal back then, are you still going to believe this guy? come on!