DOJ Watch is The Investigative Journal’s regular digest of federal enforcement activity. This edition covers actions announced by the Department of Justice from August 5 through August 7, 2026 — the most recent business days preceding publication. All information below is drawn from DOJ press releases and court filings linked throughout. Charges described as indictments are allegations only; all defendants are presumed innocent unless and until proven guilty in court.
$100 Million in Bounties: DOJ Unseals Charges Against CJNG’s Post-El Mencho Leadership
The week’s most sweeping action came Wednesday, when the Justice Department announced newly unsealed charges against five senior leaders of Cártel de Jalisco Nueva Generación (CJNG), paired with State Department reward offers totaling more than $100 million for eight cartel fugitives. According to the department, the action targets the cartel’s command structure following the death of longtime boss Nemesio Oseguera Cervantes — “El Mencho” — who was killed in a Mexican military operation in February 2026. Court filings cited by DOJ indicate that Juan Carlos Valencia González, El Mencho’s stepson, has assumed the top leadership role; the State Department is now offering up to $25 million for information leading to his arrest or conviction.
The unsealed indictments, filed in the District of Columbia, allege that the five newly charged defendants — including alleged “Grupo Elite” enforcement-arm founders Julio César Montero Pinzón and Carlos Andrés Rivera Varela — participated for over a decade in conspiracies to move cocaine, methamphetamine, heroin, and fentanyl into the United States, with firearms counts attached. The Montero Pinzón indictment is among the charging documents DOJ posted publicly. Each of the five faces up to two consecutive life terms if convicted. “This administration will use every tool at its disposal to bring these defendants to justice — no matter where they hide,” Acting Attorney General Todd Blanche said in the release.
Notably for accountability reporting, the announcement highlights the cartel’s diversification into white-collar crime. A superseding indictment in the Eastern District of New York charges Montero Pinzón, Rivera Varela, and Griselda Margarita Arredondo Pinzón in connection with a timeshare-fraud scheme targeting American property owners in Mexico — with material-support-to-terrorism counts layered on top, a consequence of CJNG’s February 2025 designation as a foreign terrorist organization. U.S. Attorney Joseph Nocella Jr. noted that thousands of U.S. victims have reported hundreds of millions of dollars in losses to Mexico-based timeshare fraud.
Ex-Goldman Banker Convicted in Ghana Power Plant Bribery Scheme
A federal jury in the Eastern District of New York on Thursday convicted Asante Kwako Berko, 52, a dual U.S.-Ghanaian citizen and former Executive Director in Goldman Sachs’ investment banking division, of conspiracy to violate the Foreign Corrupt Practices Act, an FCPA violation, and money laundering conspiracy. According to trial evidence described by DOJ, Berko conspired to funnel more than $1 million in bribes to Ghanaian officials to ensure that Aksa Enerji, a Turkish energy company and Goldman client, won a deal to build and finance a power plant during Ghana’s national energy crisis.
The evidence at trial, per the department, showed the conspirators discussed a $1 million payment to Ghana’s Minister of Power in April 2015 and paid $5,000 each to five officials during an all-expenses trip to Turkey. To keep the scheme hidden, prosecutors said, Berko lied to Goldman’s compliance team and routed discussions through a personal email account, while payments moved through shell companies, sham invoices, and nominee accounts. Goldman ultimately withdrew from the deal over corruption concerns. Berko, extradited with assistance from UK authorities, faces a maximum of 30 years in prison at his November 10 sentencing. The verdict signals that FCPA trial enforcement remains active — a data point worth watching for compliance departments across Wall Street.
Nevada Doctor Indicted in $95 Million Medicare Wound-Care Scheme
A federal grand jury in Nevada returned an indictment charging Stephen Dubin, M.D., 74, of Henderson, with a $95 million scheme to defraud Medicare through medically unnecessary amniotic wound allografts applied to elderly patients — including, the indictment alleges, patients in hospice care. Medicare allegedly paid out more than $54 million on the claims. The case is the first announced in Nevada by DOJ’s National Fraud Enforcement Division since the April launch of its West Coast Health Care Fraud Strike Force.
Filings indicate the alleged scheme ran on concealed kickbacks: prosecutors say Dubin received payments from two allograft distributors, some structured as sham “Rebate Agreements” that cut his real acquisition costs while he billed Medicare at full sham-invoice prices, pocketing the spread. The indictment further alleges falsified patient records to manufacture the appearance of medical necessity, and proceeds spent on multi-million-dollar custom yachts. Dubin is charged with conspiracy and five counts of health care fraud, each carrying up to 10 years. The charges are allegations only. Skin-substitute and allograft billing has become one of the fastest-growing fraud categories in federal health programs — DOJ’s strike force program says it has charged more than 6,200 defendants who collectively billed over $45 billion since 2007.
Guilty Plea in Massive Cloud-Provider Hacking and Extortion Campaign
Connor Riley Moucka, 26, of Kitchener, Ontario, pleaded guilty in the Western District of Washington to computer fraud, wire fraud, aggravated identity theft, and conspiracy for a 2024 hacking spree that DOJ says compromised more than 165 customer organizations of a U.S.-based software-as-a-service company. Using stolen login credentials, Moucka and co-conspirators allegedly exfiltrated billions of records — call and text histories, banking data, payroll files, Social Security and passport numbers — then extorted victims with threats of publication.
The conspirators collected more than $2.5 million in ransom payments, with Moucka personally netting at least $495,000, according to the department; victim companies suffered over $9.5 million in direct losses, and the affected individuals number at least 100 million. In one instance described in the release, Moucka re-extorted a victim using stolen data belonging to a government officer and to family members of a then-former government officer. Stolen data was marketed on BreachForums, Exploit.in, XSS.is, and Telegram. Moucka, extradited from Canada in July 2025, faces sentencing on October 27. The case — part of the FBI’s Operation Riptide — underscores how credential theft against cloud platforms has become the dominant vector for mass data extortion; the FBI says Americans reported over $20 billion in cybercrime losses last year, a 26 percent single-year jump.
Mine Managers Charged With Concealing Underground Fire From Regulators
In a rare criminal prosecution under the Federal Mine Safety and Health Act, four managers and supervisors of the MC#1 Mine in Franklin County, Illinois were indicted in the Southern District of Illinois over an August 2021 underground fire. The indictment alleges that Ronald Dale Koontz, Demitrios George Macropoulos, Randy L. Nowland, and Cory Taylor Humphrey kept miners underground and continued producing coal for all or parts of three shifts while the fire burned, rather than evacuating and notifying the Mine Safety and Health Administration as required.
The alleged cover-up extended well beyond the fire itself: filings describe false hazard-free certifications, re-entries into the mine in violation of an MSHA withdrawal order, efforts to manipulate underground gas readings so mining could resume, a directive to delete a phone record, and a concealed personal gas detector sought by investigators. A fifth conspirator, former mine manager Brandon Timothy Parsons, pleaded guilty to conspiracy to defraud MSHA in August 2025. The defendants are presumed innocent. Individual criminal accountability for mine-safety obstruction — as opposed to civil penalties against operators — remains uncommon, which makes this case a bellwether worth following.
Cartel “Money Broker” Pleads Guilty to Laundering $1.9 Million Via Crypto
On Friday, Mexican national Daniel Gordiano Valenzuela, 60, pleaded guilty to money laundering conspiracy in the Eastern District of Kentucky. According to court documents, Gordiano Valenzuela operated as a “money broker,” arranging bulk-cash pickups of drug proceeds across the United States — $1,973,076 in total — and repatriating the funds to Mexico via cryptocurrency and wire transfers in exchange for a commission. He faces up to 20 years at his November 19 sentencing. The case, investigated by DEA Detroit and IRS Criminal Investigation, illustrates the now-routine role of crypto rails in cartel money movement — a trend TIJ has tracked across multiple dockets this year.
Also on the Docket
$14 million check fraud: Eri Guzman Ortiz, 69, formerly of Miami-Dade County, pleaded guilty to wire fraud in the Southern District of Florida for creating and depositing roughly $14 million in fraudulent, unauthorized checks into sham-company accounts. Per DOJ, a Canada-based client supplied lists of thousands of people and businesses whose accounts were debited without authorization. Sentencing is set for November 5; the Postal Inspection Service and FDIC’s Inspector General investigated.
Life sentences in Mexican Mafia murder: Three Southern California gang members — Mike Escobar, James Mendez, and Kevin Trejo — were each sentenced to life in prison for murder in aid of racketeering, tied to a 2017 Orange County killing carried out in association with the Mexican Mafia prison gang. According to trial evidence, the victim was lured into a car and shot seven times in the back and once in the head. The alleged Mexican Mafia leader accused of ordering the murder from prison is scheduled for trial in August 2027 — a proceeding worth watching for what it reveals about prison-directed gang command structures.
On TIJ’s Radar
Three threads from this week’s actions warrant deeper investigation. First, the CJNG timeshare-fraud enterprise: the EDNY superseding indictment suggests a cartel white-collar arm that has extracted hundreds of millions from ordinary American property owners, and the financial infrastructure that moved that money — banks, payment processors, shell entities — remains largely unexamined in public reporting. Second, the two unnamed allograft distributors alleged to have paid kickbacks in the Dubin case: the indictment describes structured “rebate” arrangements that, records suggest, may reflect an industry-wide billing pattern in the wound-care sector rather than a single rogue practice. Third, the corporate ownership chain above the MC#1 Mine: the indictment charges individual managers, but the identity and regulatory history of the operator and its parent — and whether corporate charges follow — merit scrutiny.
Sourcing and right of reply: This digest is based entirely on Justice Department press releases and publicly filed court documents linked above. TIJ did not seek comment from defendants or counsel prior to publication of this wire digest; defendants, their counsel, or other parties named may submit responses to the editor for publication. Indictments are allegations, not findings; all defendants are presumed innocent unless proven guilty.