An investigation by El Universal found that between the years 2000 and 2012, the U.S. government had an arrangement with Mexico's Sinaloa drug cartel that allowed the organization to smuggle billions of dollars of drugs while Sinaloa provided information on rival cartels.
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But the El Universal investigation is the first to publish court documents that include corroborating testimony from a DEA agent and a Justice Department official.
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After being extradited to Chicago in February 2010, Zambada-Niebla argued that he was also "immune from arrest or prosecution" because he actively provided information to U.S. federal agents.
Zambada-Niebla also alleged that Operation Fast and Furious was part of an agreement to finance and arm the cartel in exchange for information used to take down its rivals. (If true, that re-raises the issue regarding what Attorney General Eric Holder knew about the gun-running arrangements.)
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