Blumenthal demands Tether records on payments to Bo Hines-linked Nxum

What happened

Sen. Richard Blumenthal, the ranking Democrat on the Senate Permanent Subcommittee on Investigations, has asked Tether and the consulting firm Nxum Group to produce records covering their dealings with each other and any lobbying tied to federal stablecoin legislation. Letters dated Oct. 22 were addressed to Tether chief executive Paolo Ardoino and to Nxum CEO Todd Hines, the father of former White House crypto adviser Bo Hines.

The requests cover contracts, payment records including cryptocurrency wallet addresses, communications and lobbying materials involving Tether, Nxum, Bo Hines and Notorious, a marketing firm that reportedly served as an intermediary. Most of the outlets covering the letters reported a response deadline of Nov. 3, 2026.

Blumenthal is building on a Wall Street Journal investigation published Oct. 14. According to the Journal, Nxum has earned about $6.3 million under an arrangement Tether agreed to in May 2025, when the stablecoin issuer committed to paying Notorious $415,000 a month. Most of the first payment was sent to a wallet used by Nxum and split three ways, the newspaper reported, and later payments went directly to Nxum once Hines had left government.

In a statement, Tether said it was aware of the Journal's allegations and that outside counsel had previously carried out an in-depth internal investigation which found no evidence of wrongdoing. A Nxum representative told the Journal that Hines was not involved in the Tether arrangement while in office and did not receive Tether-derived funds during that period.

Why it matters

The inquiry turns on the boundary between ordinary policy advocacy and a conflict of interest. The GENIUS Act, signed in July 2025, set federal rules for dollar-backed tokens and created a pathway for qualifying foreign issuers to serve U.S. customers, with a transition period before tighter restrictions apply. Those provisions matter commercially to Tether because its largest token, USDT, is issued offshore, and the company has since built a separate U.S. business around the same framework.

Blumenthal wrote that a multimillion-dollar payment to a firm controlled by the official chiefly responsible for crypto policy raises questions under federal ethics, anticorruption and lobbying laws, and that the payment structure suggested Tether was likely aware of the arrangement's character. The letters also revive a broader argument about advisers moving between government and the crypto industry. Blumenthal holds limited authority as the panel's ranking member, though the Nov. 3 midterm elections could change which party controls the chambers.

What the data shows

The figures cited across the reports include the $415,000 monthly fee agreed in May 2025, the roughly $6.3 million Nxum has reportedly received, and Hines' one-third ownership interest. Blumenthal also asked about a Nxum pitch deck, described by the Journal, stating that Tether would buy a 25% stake in the firm for $56 million, and about an alleged offer of more than $300,000 plus a share of future payments to Notorious' director in exchange for a nondisclosure agreement. The Nxum letter notes the firm never registered lobbying activity with the House or Senate. Separately, the Office of the Comptroller of the Currency finalized payment stablecoin rules on Oct. 21, due to take effect Jan. 18, 2027.

Background

Hines served as executive director of the President's Council of Advisers for Digital Assets from January to August 2025 and was closely involved in the stablecoin legislation. The Journal reported that he retained his one-third stake in Nxum while in government and urged lawmakers to double the law's compliance window from 18 to 36 months, a change the paper said mainly benefited Tether. It also published messages in which Hines shared talking points about Republican holdouts with his Nxum partners, and one from Todd Hines, after a call with Ardoino, saying the other side wanted certain members who were fighting crypto "obliterated."

Hines left the White House on Aug. 9, 2025. Tether announced on Aug. 19, 2025 that it had hired him as a strategic adviser, and he now runs its U.S. operations. Tether launched a domestic token, USA₮, in January 2026, with Anchorage Digital Bank as the federally regulated issuer and Cantor Fitzgerald as reserve custodian. This is Blumenthal's second Tether-related request this month: on Oct. 8 he asked Cantor Fitzgerald for records on its relationship with the issuer, after a staff report found that most Iran-linked wallets used USDT. Tether pointed to roughly $550 million in Iran-related freezes, including $344 million in April.

What is still unclear

The reports differ on the deadline: most say Nov. 3, while one outlet reported Nov. 6. It is also unresolved whether Tether and Nxum ever discussed an equity investment, and what the payment records and wallet addresses will show about who ultimately received funds. Nothing published so far establishes that Tether, Nxum or Hines acted unlawfully; the letters are requests for documents, not findings, and the parties have not yet responded in public.

What to watch

The next markers are whether both companies answer by the deadline and whether they hand over transaction-level detail, along with any response from Tether beyond its statement that an internal review cleared the matter. Also worth watching is whether the inquiry gains subpoena power and staff resources if Democrats take control of either chamber in the midterms, and whether Blumenthal's separate push for Treasury and Justice Department scrutiny of Tether's use in Iran advances.

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