Quick answer: Sen. Richard Blumenthal opened a Tether probe on Oct. 22, 2026, asking CEO Paolo Ardoino for records on payments to Nxum, a firm co-owned by former White House crypto adviser Bo Hines. The Wall Street Journal reported Nxum earned $6.3 million from a Tether deal. Tether says an outside review found no wrongdoing. The deadline to reply is Nov. 3.
A new Tether probe in the U.S. Senate is asking whether the stablecoin giant paid a White House adviser while he helped write stablecoin law. Sen. Richard Blumenthal wants Tether’s records on millions of dollars that reportedly reached Nxum, a firm co-owned by Bo Hines, by Nov. 3.
Tether denies any wrongdoing. Still, the letter puts the largest stablecoin issuer back under political pressure just days before the U.S. midterm elections.
What the Tether probe asks for
Blumenthal is the top Democrat on the Senate Permanent Subcommittee on Investigations. On Thursday, Oct. 22, he sent a letter to Tether CEO Paolo Ardoino. It asks for “records and information related to contracts, payments, communications, and lobbying” between Tether and Nxum, according to Cointelegraph.
He gave Tether until Nov. 3 to respond, Decrypt reported. The letter also asks about a Nxum pitch deck that said Tether would buy a 25% stake in the firm for $56 million.
How the Nxum money reportedly moved
The letter builds on an Oct. 14 investigation by The Wall Street Journal. Both Decrypt and Cointelegraph summarize the same core claims:
- Tether struck a deal in May 2025 that has earned Nxum about $6.3 million.
- Tether agreed to pay a marketing firm, Notorious, $415,000 a month. Most of the first payment went to a wallet used by Nxum and was split three ways.
- Later payments went straight to Nxum after Hines left government.
- Hines kept his one-third stake in Nxum while he worked at the White House.
Hines led the President’s Council of Advisers on Digital Assets and helped shape the GENIUS Act, which was signed in July 2025. He left on Aug. 9, 2025. Tether then named him CEO of its new U.S. business.
The Journal also reported that Hines urged lawmakers to extend the law’s compliance window from 18 to 36 months. That change mainly helped Tether. In one message cited by Decrypt, his father and Nxum co-owner, Todd Hines, wrote after a call with Ardoino: “They want us to obliterate these members that are fighting crypto.”
What Tether and Nxum say
Tether rejects the claims. “External counsel previously conducted an in-depth internal investigation into the matter, which found no evidence of wrongdoing,” the company said in a statement quoted by Decrypt.
A Nxum representative told the Journal that Hines was not involved in the deal while in government. The firm said he “did not receive any Tether-derived funds during that period.”
Why the Tether probe matters
On its own, the letter has limited force. As the ranking Democrat, Blumenthal has limited authority, Cointelegraph noted. However, the timing matters. The reply deadline lands on Election Day. Cointelegraph noted that Kalshi contracts gave Democrats a 92% chance of winning the House and 68% for the Senate as of Friday.
If Democrats take a chamber in 2027, they would gain committee power. As a result, this probe could grow into a fuller investigation. It would also add to wider scrutiny of crypto ties inside the Trump administration.
This is also Blumenthal’s second Tether-linked letter this month. On Oct. 8, he asked Cantor Fitzgerald, Tether’s reserve custodian and a 5% shareholder, for records on that relationship, per Decrypt.
For Tether, the stakes are about trust in the U.S. market. The company is building a U.S. arm under the new stablecoin rules. Our report on the OCC’s final GENIUS Act rule explains how those rules work. A probe tied to how the law was written could follow that push for months.
USDT data and context
So far, the probe has not moved the market. At 07:53 UTC on Oct. 24, 2026, USDT traded at $0.9991 with a market cap of about $182.5 billion, according to CoinGecko. Its 24-hour trading volume was roughly $39.6 billion.
The supply has moved in a tight band this year. It peaked near $190.2 billion on May 24, 2026, and has eased about 4% since then. In other words, demand for USDT looks steady, not panicked. For a side-by-side view of the two biggest stablecoins, see our USDT vs USDC guide.
What to watch next
- Nov. 3 deadline. Watch whether Tether hands over records or pushes back.
- Midterm results. A Democratic majority would give this probe more weight in 2027.
- More reporting. The Journal’s messages could lead to new questions about how the GENIUS Act was drafted.
- USDT flows. A sharp drop in supply would signal that the probe is hurting confidence.
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Tether Probe FAQ
What is the Tether probe about?
Sen. Richard Blumenthal wants records on Tether’s payments to Nxum, a firm co-owned by former White House crypto adviser Bo Hines. The Wall Street Journal reported Nxum earned $6.3 million from a Tether deal while Hines helped shape the GENIUS Act.
Did Tether do anything wrong?
Nothing has been proven. Tether says external counsel found no evidence of wrongdoing. A Nxum representative said Hines got no Tether-derived funds while in government.
Does the probe affect the USDT price?
Not so far. USDT traded at $0.9991 at 07:53 UTC on Oct. 24, 2026, with a market cap near $182.5 billion, per CoinGecko.
Not financial advice. Crypto prices are highly volatile; do your own research (DYOR) before making any decisions.
