“Deal Allegedly Gave Sinaloa Bosses Immunity in Exchange for Providing Info on Rival Drug Organizations”

http://narcosphere.narconews.com/notebook/bill-conroy/2011/07/us-court-documents-claim-sinaloa-cartel-protected-us-government

And it seems the feds agree:

“US government prosecutors filed pleadings in the case late last week seeking to invoke the Classified Information Procedures Act (CIPA), a measure designed to assure national security information does not surface in public court proceedings.”

http://narcosphere.narconews.com/notebook/bill-conroy/2011/09/court-pleadings-point-cia-role-alleged-cartel-immunity-deal