Trump Jr. faces subpoena demand over betting platform ties

Republican senator seeks subpoena for Trump Jr. over Kalshi and Polymarket ties

A Republican senator has called for a subpoena compelling Donald Trump Jr. to testify before Congress about his financial ties to Kalshi and Polymarket, according to reporting from Yahoo News on Friday.

The senator's demand targets Trump Jr.'s relationships with both platforms at a moment when Kalshi is engaged in active federal litigation over its event contract authority and Polymarket faces a lawsuit filed by the New York Attorney General. The subpoena request, if granted, would pull a member of the Trump family into congressional scrutiny of an industry his father's administration has treated with notable regulatory restraint.

The CFTC, which sits under the executive branch, holds primary jurisdiction over designated contract markets including Kalshi under the Commodity Exchange Act. Congressional oversight of the commission's enforcement posture — and of any executive branch communications with regulated entities — falls within the Senate's legitimate investigative authority under Article I. Whether a subpoena is authorized and enforced turns on which chamber or committee issues it and whether the subject asserts privilege, a determination that would move through federal court if contested.