A pair of men who worked as confidential sources for the FBI in El Paso, Texas, claim their whistleblowing efforts have led to threats and intimidation and the end of the investigations they were contributing to. According to the El Paso Times, Greg Gonzales, a retired sheriff’s deputy, and Wesley Dutton, a rancher and former New Mexico state livestock investigator, say the FBI dropped them after they began linking senior law enforcement officials to Mexican drug cartels. The men have alleged that Mexican drug-trafficking cartels have hosted parties and fundraisers attended by U.S. law enforcement officials, bankers and judges. Additionally, the men claim one U.S. law enforcement officer provided the Juárez drug cartel with a list of names and phone numbers of U.S. marshals. The two have also claimed U.S. law enforcement sometimes escorts drug traffickers carrying loads of illegal merchandise near the U.S.-Mexico border. The men say cartels have obtained computer access codes to U.S. surveillance systems that let them see where and when Border Patrol agents are monitoring the border. Their allegations were reportedly relayed to Texas Gov. Rick Perry in a letter. The FBI denies there is any credibility to the men’s allegations.