US Senator Richard Blumenthal has given Binance, Tether, and two cryptocurrency companies associated with President Donald Trump until January 4, 2027, to provide documents requested as part of ongoing Senate investigations. The inquiries are examining suspected illicit crypto transactions, foreign financial involvement, and potential conflicts of interest connected to the Trump administration.
Blumenthal sent formal letters to the four companies on November 5, requesting records related to the investigations. He also cautioned that companies failing to meet the requirements could face alternative measures from the Senate panel to secure the requested information.
The investigation involving Trump’s cryptocurrency businesses covers World Liberty Financial and Fight Fight Fight LLC, the entity behind the Official Trump memecoin. Lawmakers are examining foreign investments and potential conflicts of interest involving both ventures. Binance and Tether, meanwhile, are facing questions about suspected illicit financial flows, including transactions allegedly connected to Iran.
Senate Investigation Establishes Two Deadlines for Crypto Firms
The latest correspondence adds to months of congressional scrutiny and follows earlier attempts to obtain information from the companies.
Blumenthal has established two separate deadlines for document submissions. The initial production date is November 30, while January 4, 2027, marks the final deadline for voluntary compliance. He warned that the subcommittee could consider other options if the companies do not respond adequately.
The letters do not currently represent formal subpoenas or confirm that enforcement proceedings have begun. Rather, they give the four businesses additional time to provide the requested records before lawmakers decide whether stronger measures are necessary.
Blumenthal is currently the ranking member of the Senate Permanent Subcommittee on Investigations. He is expected to become its chairman after Democrats assume control of the panel, a transition that could strengthen his position in pursuing the investigations and obtaining documents through compulsory processes.
The Binance inquiry has been underway since early 2026. Blumenthal first contacted the exchange in February, seeking details about its compliance systems and potential cryptocurrency transactions involving Iran.
In April, he renewed the information requests and questioned whether Binance had accurately described its efforts to identify and address suspicious transactions. The exchange has pushed back against allegations concerning its compliance procedures.
Tether Faces Questions Over Iran-Related Cryptocurrency Activity
Congressional scrutiny of Tether increased following a September 28 report released by Democratic investigators on the Senate subcommittee.
The report examined 846 cryptocurrency wallets that had been sanctioned or targeted for seizure because of alleged connections to Iran and regional proxy organizations.
Investigators reported that 84% of these wallets had used USDT exclusively or for nearly all their transactions. They argued that the stablecoin had become an important instrument within Iran’s shadow banking system.
Tether has challenged the conclusions, pointing to its compliance operations and cooperation with authorities to identify and freeze suspicious wallet addresses.
CEO Paolo Ardoino also defended the company’s enforcement efforts, claiming that Tether froze Iran-linked wallets an average of four weeks before the relevant addresses received official sanctions designations.
The latest Senate requests are expected to seek further documentation concerning the company’s monitoring procedures and its handling of potentially prohibited transactions.
World Liberty Financial and Official Trump Memecoin Under Investigation
Separately, Blumenthal’s investigation into Trump’s cryptocurrency interests is examining World Liberty Financial and Fight Fight Fight LLC.
The senator launched the inquiry in May 2025 amid concerns that Trump’s business interests in digital assets could create conflicts with his responsibilities in government.
Lawmakers are reviewing foreign investments, financial relationships with international entities, and potential violations of government ethics requirements.
Fight Fight Fight LLC is connected to the Official Trump memecoin, while World Liberty Financial operates as a separate cryptocurrency venture associated with the Trump family.
The investigation also gained public attention during a July 2026 forum hosted by Blumenthal. The proceeding examined the Trump family’s cryptocurrency activities and included testimony from TRUMP token investors who reported losing thousands of dollars.
The latest document requests bring two significant areas of congressional oversight into focus. The first concerns possible sanctions-related cryptocurrency activity involving Binance and Tether. The second examines foreign financial relationships and potential conflicts of interest surrounding Trump’s crypto businesses.
January 4, 2027, could therefore become a critical date for the investigations. As Blumenthal prepares to lead the Senate investigative panel, the four companies face mounting pressure to disclose information and respond to questions about their financial activities.
Whether the companies comply voluntarily or the committee pursues stronger measures could determine the next phase of the Senate’s growing scrutiny of the cryptocurrency industry.
