Add “tainted meat” to the list of acceptable excuses for testing positive for steroids. And, it’s even easier to claim that if you come from a country where the government sucks at preventing drugs from being given to the cattle by ranchers . . . like in Mexico. The WADA says it believes the under-17 players on Mexico’s national team (which beat the US by a score of 4-2 last year) that they were the victims of poor government regulations.