Senate's top Democratic investigator demands Tether's records on more than $6 million paid to Bo Hines' firm during and after his time in the White House's top crypto post, with a November 3 deadline

The Senate's top Democratic investigator wants Tether to open its books on Bo Hines. In a letter dated Thursday, October 22, 2026, Sen. Richard Blumenthal, the ranking member of the Permanent Subcommittee on Investigations, asked Tether CEO Paolo Ardoino for records of the company's business with Nxum Group, the consulting firm Hines co-founded, and gave Tether until November 3 to respond. CoinDesk reported that a parallel letter went to Nxum, and The Defiant said the requests cover payment records, crypto wallet addresses and lobbying communications.

The letter draws on Wall Street Journal reporting that Tether agreed in May 2025 to pay Nxum $415,000 a month after the firm pitched a lobbying and public relations campaign, that more than $6 million flowed to the firm, and that Hines failed to divest his one-third stake in Nxum after becoming executive director of the Presidential Council of Advisers for Digital Assets, the White House crypto post he was named to in December 2024. The letter also says Tether sent its payments in cryptocurrency through a marketing firm called Notorious, and began contracting with Nxum directly as soon as Hines left the White House. Tether then hired Hines, ultimately naming him CEO of its new Tether U.S. operations, the letter says; a footnote cites Tether's August 19, 2025 announcement of him as a strategic adviser. Blumenthal wrote that the arrangements raise "alarming ethical and legal concerns."

Tether told CoinDesk it is aware of the Journal's allegations and that external counsel had previously conducted an in-depth internal investigation and found no evidence of wrongdoing. CoinDesk's report carried no comment from Hines or Nxum.

What it means: Democrats are in the Senate minority, and CoinDesk noted that if Blumenthal became chair of the subcommittee he would gain significantly greater subpoena powers; CoinDesk cited Kalshi odds of 69% for Democrats retaking the chamber. The first test is whether Tether and Nxum answer by November 3.