Article:Double Standard

I feel that there is a huge double standard when it comes to performance enhancing drugs. In the NFL players are caught serve their suspension (Merriman, Rodney Harrison), and go about their careers and receive accolades along the way. In the MLB people who have not even tested positive are heavily scruntinized and their reputations tarnished. I don't feel this is fair and am looking for any ideas on why there seems to be so much stigma surrounding drug use in baseball, but in the NFL there is little talk.