Lawmakers move on two fronts at once against the same industry

Congress isn’t waiting for new legislation to press the digital asset industry. Over the past week, Senate and House lawmakers opened or widened four separate inquiries touching Tether’s political ties and prediction market trading, while the Commodity Futures Trading Commission confirmed that insider trading on these platforms is now an enforcement priority. The actions arrive days before the November 3 midterms, when control of the committees running these probes could change hands.

The scrutiny isn’t limited to one chamber or one party. Senate Permanent Subcommittee on Investigations Ranking Member Richard Blumenthal (D-CT) is asking Tether directly about a payment tied to a former White House digital asset adviser, while House Oversight Committee Chairman James Comer, a Republican, is expanding a separate insider-trading investigation that now covers five prediction market and trading platforms.

Key Takeaways

  • Sen. Richard Blumenthal sent Tether CEO Paolo Ardoino a letter demanding information about a reported multimillion-dollar payment to a consulting firm co-founded and controlled by Bo Hines, former Executive Director of the White House Council of Advisers for Digital Assets.
  • Blumenthal sent a parallel letter to Nxum Group CEO Todd Hines seeking records on contracts, payments, communications and lobbying tied to Bo Hines.
  • Blumenthal, Rep. Paul Tonko and Rep. Valerie Foushee sent letters to BetMGM, Caesars, DraftKings, Fanatics, Kalshi and Polymarket over VIP programs and potential exploitation of vulnerable bettors.
  • House Oversight Chairman James Comer expanded his insider-trading investigation to Hyperliquid Labs, Crypto.com and Aristotle Exchange (PredictIt’s parent), adding to a probe of Kalshi and Polymarket opened in May; the committee has received nearly 1,000 documents and held five briefings.
  • The CFTC’s enforcement director, David Miller, said insider trading in prediction markets is now a priority, pointing to pending cases tied to a Venezuela raid bet and a Google engineer’s trades on Polymarket.

Senate letters zero in on Tether’s Washington connections

Blumenthal’s letter to Ardoino asks Tether to account for a reported multimillion-dollar payment made to a consulting firm that Bo Hines co-founded and controlled while he served as Executive Director of the White House Council of Advisers for Digital Assets. A companion letter went to Nxum Group CEO Todd Hines, seeking records and communications about contracts, payments and lobbying between Nxum, Bo Hines and associated parties. Both letters frame the request around whether a sitting White House digital asset adviser had a financial relationship with Tether while shaping federal policy affecting the stablecoin issuer.

A third letter from Blumenthal, joined by Reps. Tonko and Foushee, went to six platforms spanning traditional sportsbooks and crypto-native prediction markets: BetMGM, Caesars, DraftKings, Fanatics, Kalshi and Polymarket. That letter asks about VIP programs and whether they expose vulnerable bettors to exploitation, a separate line of inquiry from the Tether letters but one that lands on several of the same prediction market operators now facing insider-trading scrutiny from House Oversight.

House Oversight’s insider-trading dragnet grows

Comer’s committee has moved from two platforms to five. The investigation started in May with document demands to Kalshi and Polymarket and has since expanded to Hyperliquid Labs, Crypto.com and Aristotle Exchange, the parent company of PredictIt, according to GMT Eight. The committee is demanding records on customer identity verification, suspicious transaction identification and reporting mechanisms at each platform, and it has collected nearly 1,000 documents and held five briefings so far.

The expansion follows questions over specific trades, including an account on Hyperliquid that established a large leveraged short position minutes before an undisclosed U.S. tariff policy announcement, per the same report. Comer’s committee said its focus is whether these platforms meet their legal obligations to identify and prevent insider trading, not whether prediction markets themselves should exist.

CFTC confirms enforcement priority as its chair defends the markets

The regulatory pressure isn’t confined to Capitol Hill. CFTC Director of Enforcement David Miller, speaking at the Next Predict Summit in New York, said the Division of Enforcement is now focused on policing fraud, abuse and manipulation specifically in prediction markets, according to Press Grid. Miller noted that before his appointment there was “considerable confusion” over whether insider trading and manipulation rules applied to event contracts, a question a February 25 advisory from the Division of Enforcement sought to resolve.

Two cases are already working through the system. The CFTC’s first prediction-market insider trading case, filed in April, targets Army Master Sgt. Gannon Ken Van Dyke, accused of trading on confidential details of the operation that captured former Venezuelan President Nicolas Maduro and netting more than $400,000 on Polymarket. Van Dyke has pleaded not guilty and is free on bond ahead of a federal criminal trial set for December 7. A second matter, filed in May by the CFTC and the Department of Justice, accuses Google software engineer Michael Spagnuolo of using confidential corporate information to place $2.75 million in Polymarket wagers and walk away with about $1.2 million in gains. Neither man has admitted wrongdoing, and both cases remain unresolved.

Miller also confirmed the agency has open investigations into candidates who placed trades on contracts based on their own elections, without naming any, as the midterms approach. That sits alongside public statements from CFTC Chair Mike Selig, who has repeatedly argued that regulated prediction markets are distinct from gambling and said the agency is “closely monitoring prediction markets for attempts to distort trading activity or manipulate outcomes.” Not every lawmaker agrees with that framing: Rep. Gabe Vasquez (D-NM) pushed back directly, saying that if the CFTC “can’t tell the difference between a ‘prediction’ and a sports bet, it’s a bet.”

What to Watch

Congress returns in November after the midterm elections, when committee gavels, and the direction of these probes, could change hands depending on the outcome. Rep. Josh Riley (D-NY) has already introduced the Drain the Swamp Act to ban members of Congress from trading stocks and betting on prediction markets, a bill that would gain relevance if Democrats pick up seats. Companies with ties to President Trump, including crypto, venture capital and prediction market firms, are staffing up with lawyers and lobbyists in anticipation of broader congressional inquiries if Democrats flip either chamber, according to Bloomberg. On the enforcement side, the Van Dyke trial is scheduled to begin December 7, and Miller has signaled more election-related trading cases could surface once the midterms are over.

Sources