According to CoinMeta, U.S. Senator Richard Blumenthal is investigating a matter where Tether paid $6.3 million to Nxum, a company associated with former Trump advisor Bo Haynes, involving a potential conflict of interest. Tether agreed in May 2025 to pay $415,000 per month to Nxum for lobbying and public relations services, at a time when Bo Haynes served as the executive director of the White House Digital Assets Advisory Committee. Blumenthal has requested that Tether and Nxum submit relevant contracts and payment records by November 6th, and Bo Haynes has denied any involvement in such transactions during his tenure.