Utah Senator Requests Judiciary Probe Into Trump Jr. Ties to Kalshi and Polymarket

Sen. John Curtis (R-Utah) has asked the Senate Judiciary Committee to investigate whether presidential family relationships have been used for private financial benefit or preferential access, specifically citing Donald Trump Jr.’s ties to prediction markets Kalshi and Polymarket.

In a Sept. 21 letter to Judiciary Committee Chair Chuck Grassley (R-Iowa) and Ranking Member Dick Durbin (D-Illinois), Curtis urged the committee to subpoena Trump Jr. and Hunter Biden. John Cornyn (R-Texas) and Thom Tillis (R-North Carolina) said they support the initiative. Curtis framed the request as a bipartisan test of consistent oversight standards.

Curtis wrote that the pattern extends to Trump Jr.’s significant financial and advisory ties to prediction market platforms that depend on favorable federal regulatory decisions being considered by the Commodity Futures Trading Commission. The senator questioned whether such relationships can create actual or perceived expectations of favorable treatment and asked the committee to assess whether current ethics, disclosure or anti-corruption laws are sufficient.

Trump Jr.’s Advisory and Equity Positions

Trump Jr. holds a paid advisory role and received equity at Kalshi. At Polymarket he serves as an advisor and is a partner at 1789 Capital, which committed $300m to a recent Polymarket funding round. Those positions have grown more visible as the platforms expand into sports event contracts, elections, economic data and other products.

A Trump Jr. spokesman, Andrew Surabian, has said Trump Jr. does not trade on prediction markets, does not communicate with the federal government on behalf of Kalshi or Polymarket, and offers only marketing advice to the companies. Surabian has also argued that Trump Jr. is a private citizen and should not be expected to abandon outside business activity because his father is president.

Where the Risk Lies

The letter introduces a new political wrinkle as prediction markets seek to preserve a federal regulatory model against increasingly aggressive state-level enforcement, according to reporting by SBC Americas. It arrives while Utah prohibits gambling and pursues enforcement against Kalshi’s sports markets; the Tenth Circuit Court of Appeals recently denied Kalshi’s emergency motion for an injunction pending appeal. Curtis’s home state is not alone: circuit splits between the Third and Ninth Circuits have prompted Supreme Court petitions from New Jersey, Robinhood and Crypto.com.

The probe itself does not alter existing CFTC or court proceedings. It does, however, illustrate how visible political connections can trigger separate congressional review even when spokesmen emphasize limited roles and no direct government contact. Operators and investors must therefore weigh whether such ties accelerate or retard regulatory clarity in an already fractured landscape.

Reporting: SBC Americas

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