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United States · Nevada Gaming Control Board / Nevada Gaming Commission · US District Court (C.D. Cal.)VERIFIED

Wayne Nix / MGM Resorts — illegal bookmaking and AML failures at MGM Grand and The Cosmopolitan

MGM Resorts International, MGM Grand, The Cosmopolitan of Las Vegas; Wayne Nix; Scott Sibella

Incident type
AML · Criminal organisation
Conduct period
2014–2020 (Nix bookmaking); 2015–2020 (Nix gambling at MGM properties)
First-instance verdict
2024-01-09
Final adjudication
2025-04-24
Status
Settled
Last verified
2026-05-02

Summary

MGM Resorts International, MGM Grand, and The Cosmopolitan of Las Vegas agreed to pay an USD 8.5 million fine to settle a Nevada Gaming Control Board complaint alleging unsuitable methods of operation arising from the activities of illegal bookmaker Wayne Nix. The complaint, filed 17 April 2025 (NGC Case No. 24-03), detailed how the two properties accepted millions in illicit cash proceeds from Nix's California bookmaking business, failed to file suspicious activity reports, and allowed employees — including former MGM Grand President Scott Sibella — to knowingly facilitate Nix's gambling. The Nevada Gaming Commission approved the settlement on 24 April 2025 by 4-0 vote. Nix pleaded guilty federally in March 2022; Sibella pleaded guilty in December 2023 to failing to file a SAR regarding Nix and was added to Nevada's exclusion list (Black Book) effective 26 February 2026.

Timeline

VERIFIED

  1. Wayne Nix operates an illegal bookmaking business in California, using a Costa Rican website (Sand Island Sports).

  2. Nix visits MGM Grand and affiliated properties on over 400 separate days, transporting cash in duffle bags, paper bags, and leather purses.

  3. MGM Grand compliance first becomes suspicious of Nix's source of funds after he presents USD 50,000 in small denominations; no SARs filed thereafter.

  4. Scott Sibella, then President of MGM Grand, allegedly fails to file a SAR regarding Nix's presentation of USD 120,000 in cash.

  5. Sibella departs MGM Grand; later joins Resorts World Las Vegas as president.

  6. Nix pleads guilty in US District Court (C.D. Cal.) to conspiracy to operate an illegal gambling business and subscribing to a false tax return.

  7. Sibella pleads guilty to one count of willfully failing to file or cause to file a SAR regarding Nix's activity.

  8. MGM Grand enters a non-prosecution agreement with the US Attorney's Office, agreeing to pay USD 6,527,728 plus USD 500,000 forfeiture.

  9. The Cosmopolitan enters a non-prosecution agreement, agreeing to pay USD 928,600 plus USD 500,000 forfeiture.

  10. NGCB files 10-count Complaint for disciplinary action against MGMRI, MGM Grand, and The Cosmopolitan (NGC Case No. 24-03).

  11. NGCB and MGMRI execute a proposed Stipulation for Settlement with USD 8.5 million fine.

  12. Nevada Gaming Commission approves the Stipulation by 4-0 vote.

  13. Nevada Gaming Commission issues Final Order of Exclusion adding Wayne Nix to Nevada's exclusion list (NGC-25-06).

The operation

VERIFIED
  • Nix transported high-denomination cash from California to Las Vegas in duffle bags, paper bags, and leather purses, using illicit bookmaking proceeds to gamble and pay off markers at MGM properties.
  • Former MGM Grand President Sibella and two casino hosts knew Nix was an illegal bookmaker; Sibella approved comps and allegedly placed bets directly with Nix via Sand Island Sports.
  • A Cosmopolitan casino host (under prior ownership) knew of Nix's bookmaking, referred at least one customer for illegal sports bets, and accepted a USD 2,000 gratuity from Nix; the host failed to report the suspicious activity to compliance.
  • MGM Grand's AML programme failed to assign risk for repeated large cash transactions in large denominations and did not require compliance to consult marketing hosts for source-of-funds information, despite other departments routinely doing so.
  • By 2020, MGM Grand had accepted USD 4,079,830 in illicit proceeds from the Nix gambling business; The Cosmopolitan accepted at least USD 928,600.
  • The NGCB complaint also included one count related to a separate illegal bookmaker, Mathew Bowyer, discovered during the Nix investigation — the same Bowyer named in the parallel RWLV case.

Primary sources

  1. NGCB and MGM Resorts International Enter Into Proposed Stipulation for Settlement Regarding Disciplinary Complaint (press release) — Nevada Gaming Control Board, 2025-04-18 [link]
  2. NGCB Complaint, NGC Case No. 24-03 (MGMRI, MGM Grand, The Cosmopolitan) — Nevada Gaming Control Board, 2025-04-17 [link]
  3. MGM Resorts to Pay $8.5 Million Over Illegal Betting Claims — Covers, 2025-04-26 [link]
  4. Illegal bookmaker Wayne Nix added to Nevada's 'Black Book' — Las Vegas Review-Journal, 2026-02-26 [link]

Analysis — surveillance & operations perspective

ANALYSIS

Editorial commentary by Surveillance Intelligence Asia. Opinion — clearly distinguished from the verified facts above.

The Nix case answers two questions surveillance directors have asked since the Sibella era: how does the highest-rank casino executive end up with a federal SAR-failure conviction, and how does a single illegal bookmaker move USD 5M+ in cash across the Strip without controls firing? The answer in both cases is a marketing-host pipeline that ran outside the AML perimeter. Hosts knew what compliance didn't, because compliance was structurally not allowed to talk to hosts about source-of-funds.

The 2017 SAR-threshold breach — when MGM Grand compliance flagged Nix's small-bill USD 50k presentation but no SAR was filed — is the moment the case begins. Every quarter that passed without that SAR being filed extended liability and built the basis for the eventual federal NPA. The Nevada state action followed because the federal government allowed it to proceed in parallel — Nevada doesn't usually duplicate federal AML when NPAs cover the conduct, so the state action represents an explicit choice to add a regulatory layer.

The 70-day window in 2025 in which Nevada finalised AML actions against three Strip operators — Resorts World Las Vegas, MGM-Cosmopolitan, and Wynn Las Vegas — is now the operational baseline. Macau and Singapore VIP-channel design teams should treat Strip enforcement as a forward-leading indicator: regulator coordination has tightened, parallel federal-state action is the new normal, and host-compliance separation is no longer defensible as an organisational design choice.

Lessons (observation, not prescription)

  • Hosts must be inside the AML risk picture, not outside it. Marketing-compliance separation by policy is now a structural exposure.
  • A single un-filed SAR threshold is the seed of a multi-year liability tree.
  • Regulator coordination across federal and state is now real-time, not sequential. Operators should plan defence as a multi-jurisdiction parallel exposure from the first NPA-trigger event.

Last verified: 2026-05-02. Errors? Email corrections@surveillanceasia.com. Corrections published within 72 hours per editorial process.