MEXICO CITY—The U.S. warned Mexico it had imperiled the sharing of information on the country’s drug cartels by releasing a confidential dossier providing evidence that Mexico’s former defense minister was in the pay of drug kingpins, pushing bilateral antidrug cooperation to its lowest point in years.
Mexico’s action “calls into question whether the United States can continue to share information to support Mexico’s own criminal investigations,” the Justice Department said late Friday, adding that the release of the 751-page dossier on Gen. Salvador Cienfuegos was a violation of bilateral treaty obligations on information sharing.
The U.S. response comes after Mexican President Andrés Manuel López Obrador accused the Drug Enforcement Administration of fabricating charges against Gen. Cienfuegos, who was exonerated of drug trafficking and bribery by Mexico’s attorney general’s office Thursday. Gen. Cienfuegos was arrested in the U.S….