How to eliminate doping scandals

Okay, the news that Landis is on the verge of losing his title and being fired from his team is just exasperating, especially after the number of times they tried and failed to discredit Lance Armstrong. Can a person win the Tour without people thinking he cheated and launching a huge, retroactive investigation? This is getting ridiculous! The sad thing, of course, is that there are always riders who do try to cheat the system and they seem to be ruining it for everyone else.

So, how 'bout this? Before each leg of the race, let's just dope up all the riders so that everything's fair. It's probably cheaper than all these blood tests, and far more effective.