"Racetrack officials say horse owners are subjected to vigorous background checks before being issued a license. It appears Jose Trevino Morales, whose brother is head of the infamous Los Zetas cartel in Mexico, slipped through the cracks. He wasnt the only one, either."
http://newsok.com/state-racing-agency-licensed-alleged-drug-cartel-associates/article/3684273
http://newsok.com/state-racing-agency-licensed-alleged-drug-cartel-associates/article/3684273