Federal Gambling Law — Wire Act & UIGEA

Federal gambling law doesn't ban gambling outright — that's mostly left to the states. Instead, it targets the infrastructure of illegal gambling: the wires, the money transfers, and the interstate networks that gambling operations depend on. The two most important federal gambling statutes are the Wire Act (18 U.S.C. § 1084), which prohibits using wire communications to transmit bets or wagering information across state lines, and the Unlawful Internet Gambling Enforcement Act (UIGEA, 31 U.S.C. §§ 5361–5367), which makes it illegal for payment processors to handle transactions for unlawful internet gambling. Together, these laws create the federal framework that shapes where and how Americans can legally gamble online — even as state-by-state legalization of sports betting and online casinos has transformed the landscape since 2018. See Indian Gaming Regulatory Act for tribal casino regulation.

Current Law (2026)

Legal Authority

• 18 U.S.C. § 1084 — Wire Act (makes it a federal crime for anyone in the gambling business to knowingly use wire communications — phone, internet, cable — to transmit bets, wagering information, or money/credit from bets in interstate or foreign commerce; penalty up to 2 years)
• 31 U.S.C. § 5361 — UIGEA findings and purpose (Congress found that internet gambling is primarily funded through personal use of payment systems and that new mechanisms are needed to prevent unlawful gambling from being funded through banking channels)
• 31 U.S.C. § 5363 — Prohibition on acceptance of financial instruments for unlawful internet gambling (no person in the gambling business may knowingly accept payment — credit cards, electronic fund transfers, checks — in connection with internet gambling that is unlawful under federal or state law)
• 31 U.S.C. § 5364 — Policies and procedures (requires designated payment systems — banks, credit card networks, money transmitters — to establish policies to identify and block restricted gambling transactions)
• 31 U.S.C. § 5366 — Criminal penalties (anyone who violates § 5363 faces up to 5 years imprisonment and fines)
• 18 U.S.C. § 1952 — Travel Act (prohibits interstate or foreign travel or use of interstate facilities to promote, manage, establish, carry on, or facilitate unlawful gambling — the principal RICO predicate act for gambling; used against bookmakers, sports betting rings, and casino operators)
• 18 U.S.C. § 1953 — Interstate transportation of wagering paraphernalia (prohibits knowing transport in interstate commerce of betting slips, policy tickets, lottery paraphernalia, or similar gambling instruments; complements § 1952 by targeting the materials, not just the travel)
• 18 U.S.C. § 1955 — Illegal Gambling Business Act (targets gambling businesses that violate state law, involve 5+ persons, and have been in operation for 30+ days or gross revenue exceeds $2,000/day)

How It Works

The Wire Act is the oldest and most foundational federal gambling statute. Enacted in 1961 to combat organized crime's use of telephone networks for bookmaking, it prohibits anyone "engaged in the business of betting or wagering" from knowingly using wire communications to transmit bets or wagering information in interstate or foreign commerce. The critical interpretive question — does the Wire Act apply to all forms of online gambling or only sports betting? — was answered by a 2011 DOJ Office of Legal Counsel opinion concluding the Act is limited to sports wagering. This opinion opened the door for states to legalize online lotteries, poker, and casino games. A 2018 OLC opinion reversed course, but was itself rejected on January 20, 2021 by the First Circuit in New Hampshire Lottery Commission v. Rosen (986 F.3d 38), which held the Wire Act applies only to sports gambling.

UIGEA takes a different approach — instead of directly criminalizing gambling, it targets the money flow. It prohibits gambling businesses from accepting payment through credit cards, debit cards, electronic fund transfers, checks, or other financial instruments in connection with internet gambling that violates federal or state law. Importantly, UIGEA doesn't define what gambling is legal or illegal — it piggybacks on existing federal and state prohibitions. If a state legalizes online poker, processing payments for that poker isn't a UIGEA violation. The law requires financial institutions and payment processors to adopt policies blocking restricted gambling transactions, which is why your bank may decline a deposit to an offshore gambling site.

UIGEA's exemptions are significant. Fantasy sports contests are explicitly carved out (the "fantasy sports exemption" that enabled DraftKings and FanDuel before sports betting was legalized). Interstate horseracing wagers (under the Interstate Horseracing Act), state lotteries, and Indian gaming transactions are also exempt.

The Murphy v. NCAA revolution. While not itself a gambling statute, the Supreme Court's 2018 decision in Murphy v. NCAA struck down the Professional and Amateur Sports Protection Act (PASPA), which had effectively banned sports betting in most states since 1992. After Murphy, states were free to legalize sports betting, and the floodgates opened — as of 2026, more than 38 states plus D.C. have legalized some form of sports betting. Federal law (Wire Act, UIGEA) still applies to interstate and online operations, but the regulatory center of gravity has shifted decisively to the states.

Enforcement — led by the DOJ and FBI — focuses on unlicensed offshore operators, illegal gambling businesses operating in violation of state law, and money laundering connected to illegal gambling. Large-scale illegal gambling operations are frequently prosecuted under RICO. Licensed, state-regulated operators that comply with both state and federal law generally face no federal enforcement risk.

How It Affects You

If you're a sports bettor, your legal status depends on your state. Since Murphy v. NCAA (2018) struck down PASPA, 38+ states have legalized sports betting in some form, and major platforms (DraftKings, FanDuel, BetMGM, Caesars) are licensed in most legal markets. If you're using a licensed in-state sportsbook, you're operating within the law; your transactions are processed through UIGEA-compliant payment channels. Key practical details: sports betting winnings are taxable federal income in all amounts — there's no minimum threshold for reporting. Sportsbooks issue a W-2G for single net winnings over $600 on sweepstakes/free bets and certain larger wins; losses are deductible only if you itemize and only to the extent of your winnings. You'll also owe state income tax in most states on net winnings — rates vary. Geolocation is enforced: you must be physically inside a legal state when placing a bet, regardless of where you're licensed or registered. The American Gaming Association (americangaming.org) maintains a live state-by-state legal status map.

If you play online casino games, online poker, or use offshore gambling sites, your legal status is more complicated. Online casino gaming (slots, table games) and online poker are currently legal for players in New Jersey, Michigan, Pennsylvania, Connecticut, West Virginia, Delaware, and Rhode Island — plus a few additional states for poker-only. In all other states, online casino gambling is technically illegal under state law. Offshore unlicensed sites (based in Antigua, Costa Rica, or other jurisdictions) violate the Wire Act and UIGEA; individual bettors are almost never prosecuted, but you have no legal recourse if the site withholds your funds, fails to pay out, or exits the U.S. market. Offshore site operators have been indicted (the "Black Friday" 2011 DOJ action against PokerStars, Full Tilt, and Absolute Poker is the landmark case), and sites regularly discontinue U.S. services without warning. If you're going to play online, stick to state-licensed platforms where deposits are held in segregated accounts and state gaming commissions provide regulatory recourse.

If you participate in fantasy sports or daily fantasy sports (DFS), UIGEA's fantasy sports exemption (31 U.S.C. § 5362(1)(E)(ix)) covers contests where outcomes reflect participants' skill and knowledge, prizes are set in advance, and winning is not based on the score of a single real-money wager. DraftKings, FanDuel, and similar DFS platforms have successfully argued their products fall within this exemption, and most states treat them as legal skill games. DFS winnings are taxable; platforms issue a 1099 for cumulative prize payouts over $600. Some states — Arizona, Idaho, Montana, Nevada, Washington — have explicitly prohibited or restricted DFS contests despite the UIGEA exemption, so verify your state law before playing. Season-long fantasy leagues with entry fees generally enjoy similar protection, though no federal statute explicitly addresses them.

If you're a payment processor, bank, or fintech handling gambling transactions, UIGEA (31 U.S.C. §§ 5361–5367) requires written policies and procedures to identify and block "restricted transactions" — unlawful internet gambling transactions. The compliance challenge is distinguishing legal payments (state-licensed sportsbooks, federally regulated tribal gaming under IGRA, state lotteries, DFS platforms) from illegal ones. Major card networks (Visa, Mastercard) use MCC codes 7994 and 7995 to flag gambling transactions; issuing banks configure block or pass-through decisions at the MCC level. UIGEA's implementing regulations (12 CFR Part 233 for banks, called Regulation GG) require written policies but give significant implementation flexibility. The biggest legal gambling operators use specialized payment processors familiar with UIGEA compliance to avoid transaction misclassification. For compliance questions, the FFIEC's UIGEA FAQ at ffiec.gov and the AGA's Responsible Gambling resources are the authoritative starting points.

State Variations

Federal gambling law establishes the floor; states set the actual rules:

• 38+ states have legalized sports betting (as of 2026), each with different regulatory frameworks
• Online casino gaming is legal in approximately 7 states
• Online poker is legal in a smaller subset of states with interstate compacts in some cases
• State lottery operations are legal in 45 states plus D.C.
• Indian gaming is regulated under IGRA through tribal-state compacts
• Some states prohibit all forms of online gambling; others have comprehensive legalization

Implementing Regulations

• 25 CFR Part 502–585 — National Indian Gaming Commission (NIGC) regulations implementing the Indian Gaming Regulatory Act (IGRA) — the comprehensive federal framework governing Class II gaming (bingo, non-banked card games) and Class III gaming (casino-style table games, slot machines, sports betting) on Indian lands:

  • 25 CFR Part 531 — Management Contract Requirements: tribes may enter into management contracts with outside companies to operate gaming facilities; the contract must (§ 531.1): establish that all gaming is conducted in accordance with tribal gaming ordinances and the National Indian Gaming Commission's minimum internal control standards; identify the term (limited to 5 years initially, 7 years with NIGC approval); specify the management fee structure (maximum 30% of net revenues, or up to 40% for extraordinary capital financing needs); require the contractor to establish and maintain adequate accounting and fiscal procedures; and prohibit (§ 531.2) any transfer of tribal land or real property interests to the contractor — ensuring that management arrangements do not become de facto ownership of tribal lands by outside parties
  • 25 CFR Part 535 — Approval Procedures for Management Contract Amendments: amendments to approved management contracts (§ 535.1) require Chairman approval before taking effect; assignments of management contract rights (§ 535.2) are permissible only with Chairman approval; if NIGC learns of post-approval violations of contract standards (§ 535.3), the Chairman may require modifications or initiation of contract termination proceedings — maintaining ongoing oversight after initial approval
  • 25 CFR Part 537 — Background Investigations: all persons with a financial interest in, or management responsibility for, a management contract must pass a background investigation (§ 537.1) conducted by NIGC; the investigation examines: (1) prior felony convictions, particularly for offenses related to fraud, theft, or gambling; (2) gaming license revocations; (3) civil judgments involving gambling activities; (4) bankruptcy and financial integrity; background investigations protect tribal gaming from penetration by organized crime — the IGRA's primary structural concern when it was enacted in 1988
  • 25 CFR Part 559 — Facility License Notifications: tribes must notify the NIGC Chairman within 30 days of issuing or renewing a facility license (§ 559.3), including an attestation (§ 559.4) certifying that: the facility is on Indian lands eligible for gaming; the tribe has adopted an ordinance or resolution approved by the Chairman; and the gaming is conducted in accordance with a tribal-state compact (for Class III gaming); tribes must notify the Chair within 30 days if a facility license is terminated or a gaming location closes (§ 559.5); the Chair may require submission of land documentation, environmental records, and public health and safety documentation for any gaming location (§ 559.6)

  The NIGC regulatory framework operates on a three-tiered sovereignty structure: the federal government (NIGC), tribes (tribal gaming commissions and ordinances), and — for Class III gaming — states (tribal-state compacts). NIGC's primary authority is approval of tribal gaming ordinances, management contracts, and background investigation oversight; day-to-day regulation of gaming operations is handled by tribal gaming commissions under NIGC minimum internal control standards. As of 2026, there are approximately 500 tribal gaming operations in 29 states generating over $40 billion in annual gross gaming revenue — making Indian gaming the largest segment of the U.S. gambling industry by revenue.

• 31 CFR Part 1021 — BSA requirements for casinos (anti-money laundering programs, suspicious activity reporting, currency transaction reports)

• 12 CFR Part 233 — Prohibition on Funding of Unlawful Internet Gambling (Regulation GG): the Federal Reserve/Treasury joint rule implementing the Unlawful Internet Gambling Enforcement Act of 2006 (UIGEA, 31 U.S.C. §§ 5361–5367), which prohibits payment processing entities from knowingly accepting payments for unlawful internet gambling — credit cards, ACH transfers, wire transfers, and money transmitting businesses are all covered payment systems:

  • § 233.2 — Definitions: "unlawful internet gambling" means accepting bets or wagers using the internet from a person located in the United States in connection with a bet that is unlawful under any applicable federal or state law — the UIGEA does not itself define what gambling is unlawful; it layers onto existing law; "restricted transaction" means a transaction that a payment system participant may not process because it is connected to unlawful internet gambling; what makes the UIGEA unusual: the statute expressly preserves existing federal and state gambling law and carves out tribal gaming (governed by IGRA), state-authorized gambling, off-track horse racing under the Interstate Horseracing Act, and skill contests
  • § 233.3 — Designated payment systems: the five designated systems whose participants must implement UIGEA policies are: (1) ACH systems — the bank-to-bank electronic transfer network; (2) card systems — Visa, Mastercard, Discover, American Express; (3) check collection systems — check processing networks; (4) money transmitting businesses (when they allow remote transmission initiation); and (5) wire transfer systems — Fedwire and CHIPS; each system has different compliance obligations depending on the participant's role
  • § 233.4 — Exemptions: in the ACH system, only the originating depository financial institution (ODFI) for ACH debits and the receiving depository financial institution (RDFI) for ACH credits bear full compliance obligations — intermediary processors are exempt; in card systems, only the card issuer and the merchant acquirer are non-exempt; this targeted-participant approach recognizes that not every participant in a payment chain can reasonably identify restricted transactions; check collection system participants are generally exempt except for the first and last bank in the chain
  • § 233.5 — Policies and procedures required: non-exempt participants must establish written policies and procedures reasonably designed to identify and block or otherwise prevent or prohibit restricted transactions; a participant may satisfy this requirement by relying on the designated payment system operator's network-level policies if those policies are themselves compliant — allowing smaller institutions to rely on Visa's or Mastercard's UIGEA compliance programs rather than independently developing their own
  • § 233.6 — Due diligence examples: for non-exempt card acquirers, reasonable policies include screening new commercial customer accounts for SIC (Standard Industry Classification) codes associated with gambling (7993, 7999), requiring gambling merchants to represent that their business is lawful, and monitoring for high chargeback rates; for ACH, reviewing originator account activity for patterns suggesting gambling payments (large round-number transactions, recurring patterns from gaming sites); the "reasonably designed" standard allows business-specific approaches

  Regulation GG is enforced by the federal functional regulators of each designated payment system — the Federal Reserve, OCC, FDIC, and NCUA for their respective institutions (OTS was abolished by Dodd-Frank in 2011), and the FTC for other participants. There is no standalone UIGEA civil penalty provision — enforcement runs through each regulator's existing examination and enforcement authority. The UIGEA's practical effect has been to make U.S.-licensed payment processing essentially unavailable for offshore internet gambling sites; domestic sports betting sites (now legal in most states following Murphy v. NCAA) operate through state-licensed payment systems and are not "unlawful" gambling for UIGEA purposes. No major rulemakings since the original 2008 finalization (73 FR 69382).

Pending Legislation

• S 1033 (Sen. Blumenthal, D-CT) / HR 2087 (Rep. Tonko, D-NY) — SAFE Bet Act: set federal minimum standards for sports betting, consumer protections, and public-health measures. Status: Introduced.
• S 4160 — Prediction Markets Are Gambling Act. Status: Introduced.
• HR 6985 — FULL HOUSE Act: reinstate rule limiting gambling loss deductions to gambling winnings. Status: Introduced.
• S 2230 (Sen. Cortez Masto, D-NV) — FULL HOUSE Act (Senate companion). Status: Introduced.
• HR 4630 (Rep. Barr, R-KY) — WAGER Act: let taxpayers deduct gambling losses in full each year. Status: Introduced.
• HR 7875 — POINTS Act: fund competitive grants for gambling addiction prevention and treatment. Status: Introduced.
• S 1454 (Sen. Kennedy, R-LA) / HR 3946 (Rep. Bacon, R-NE) — FIGHT Act: ban gambling on animal fighting, bar minors, let private parties sue. Status: Introduced.

Recent Developments

The post-Murphy expansion of legal sports betting has been the dominant story in gambling law. The rapid state-by-state legalization created a patchwork regulatory landscape where the same app (DraftKings, FanDuel, BetMGM) is legal in one state and illegal in the next. Federal efforts to establish nationwide sports betting standards (like the proposed federal framework bills in 2018-2020) have stalled, leaving regulation entirely to the states. The DOJ's return to the narrow reading of the Wire Act (sports-only) has provided legal clarity for interstate lottery and online gaming operations. Problem gambling has emerged as a significant public health concern as access to legal betting has expanded dramatically, prompting states to fund treatment programs with gambling tax revenue.

The Department of the Interior approved by operation of law in March 2026 the 2025 Amendment to the Lac du Flambeau Band of Lake Superior Chippewa Indians gaming compact with the State of Wisconsin, governing the operation and regulation of Class III gaming activities.