FILE - In a Friday, Feb. 9, 2007 file photo, accused Mexican drug kingpin Osiel Cardenas-Guillen, 39, leaves the federal courthouse in Houston after pleading not guilty to charges connected to running a cartel that at its height smuggled four to six tons of cocaine per month into the country. Cardenas-Guillen's nephew Rafael Cardenas Vela, a Gulf cartel member of distinguished lineage who ran three important “plazas” or territories, recently testified to the organization's structure and operations in such detail that it could compose a short course _ Narco 101, perhaps. (AP Photo/Pat Sullivan, File)
