Senate Democrat demands Cantor Fitzgerald’s records on its Tether stake

Senator Richard Blumenthal has demanded answers from Cantor Fitzgerald about its relationship with Tether, following a Permanent Subcommittee on Investigations report that found the cryptocurrency firm props up Iran’s shadow banking system¹.

Blumenthal sent the letter on Thursday to Cantor’s chief executive Brandon Lutnick, the son of Commerce Secretary Howard Lutnick². He asked for records on the firm’s stake in Tether and on its custody role for the stablecoin’s reserves⁴. He also sought all correspondence from Howard Lutnick regarding Tether, including communications after he stepped away from Cantor³.

The figures and the disagreement

One account put the holding at a $10 billion Tether stake and the gain to Howard Lutnick at $250 million⁵. Another reported that Howard Lutnick, Cantor’s former chairman and now Commerce Secretary, has made more than $250 million over the same period⁴. A third framed the request as a probe into the Tether ties and a $250 million Lutnick windfall³.

The accounts differ on who holds which title. One describes Brandon Lutnick as Cantor’s chief executive and his father as Commerce Secretary², while another attributes the gain to “CEO Howard Lutnick”⁵. The same account says the firm has handled Tether’s reserves for years⁵. The stated focus of the inquiry is reserve custody, sanctions compliance and exposure to illicit finance risk⁶.

Why it matters to investors

Dollar stablecoins work only if the reserves behind them are real, liquid and held where they can be verified. A congressional request for the custody records of the largest such token therefore goes to the mechanism, not just the politics^4,6.

The second issue is the overlap between a cabinet post and a private financial interest. The letter asks for a sitting Commerce Secretary’s correspondence about a company in which his former firm holds a stake, which is why the request reaches beyond market structure into conflict-of-interest territory^2,3.

The third is sanctions. The subcommittee report that prompted the letter concerns Iran’s shadow banking system, and institutions that touch those flows face secondary-sanctions risk^1,6. What to watch is whether Cantor Fitzgerald produces the documents, whether the subcommittee’s Republican majority joins the request, and whether any finding reaches the firms that intermediate stablecoin reserves^1,6. A stablecoin that clears sanctioned flows is a different instrument from one that does not, and records of the kind requested here are the only way to tell the two apart from outside the firm.