Senator Richard Blumenthal has initiated a formal inquiry into Binance, the world’s largest cryptocurrency exchange, following explosive media revelations about potential widespread sanctions violations tied to Iran. Blumenthal is the lead Democrat on the Senate Permanent Subcommittee on Investigations. While Republicans hold the majority in the Senate, under the Subcommittee rules, the Democrat Senator can initiate the inquiry.
Binance has denied the allegations.
In a letter sent on February 24, 2026, to Binance CEO Richard Teng, Blumenthal demanded extensive internal records, citing concerns that the platform may have facilitated nearly $1.7 billion in transactions benefiting Iranian government entities and affiliated terrorist groups.
The investigation stems from detailed reporting by The New York Times and other outlets. According to these accounts, Binance’s own compliance teams identified suspicious activity late last year involving two Hong Kong-based partners, Hexa Whale and Blessed Trust.
These entities allegedly served as conduits for laundering funds and enabling trade that circumvented U.S. and international sanctions.
Internal documents reportedly showed transfers to digital wallets linked to Iran’s Islamic Revolutionary Guard Corps (IRGC) and payments supporting crew members of Russia’s “shadow fleet” of oil tankers, which evade Western restrictions on Moscow’s energy exports.
Warnings also surfaced that Hexa Whale had connections to the Yemeni Houthis, a group designated as a terrorist organization.
Blumenthal’s letter highlights what he described as a troubling pattern: Binance personnel who flagged these risks faced suspension or termination, raising questions about whether the company prioritized business over regulatory obligations.
The senator requested all documentation related to Iranian users on the platform, communications and decisions involving the two Hong Kong intermediaries, investigations into Russian oil-related activity, and records on the use of stablecoins such as Tether (USDT) and USD1 in potential evasion schemes.
He also sought details on any compliance staff changes tied to these probes. Responses are due by March 6, 2026.
This scrutiny arrives at a sensitive moment for Binance.
In 2023, the exchange pleaded guilty to multiple violations, including allowing customers from sanctioned nations like Iran to trade and failing to implement adequate anti-money-laundering controls.
The company paid a record $4.3 billion penalty, its founder Changpeng Zhao briefly served prison time, and it agreed to overhaul its compliance framework while exiting the U.S. market.
Blumenthal noted that the latest allegations cast doubt on whether those reforms have taken hold, especially amid reports of lobbying efforts and partnerships, including ties to World Liberty Financial, a crypto venture linked to President Trump’s family.
Binance has pushed back firmly.
A spokesperson stated that the exchange detected and reported the suspicious flows, viewing this as proof that its monitoring systems function effectively.
The company maintains it found no evidence of deliberate sanctions breaches, removed implicated accounts, and ended its relationship with Blessed Trust in January.
Officials have disputed claims that investigators were punished for raising concerns, insisting affected employees resigned voluntarily rather than being dismissed.
In public statements, CEO Teng has defended the platform’s transformation into one of the industry’s most robust compliance operations.
The inquiry underscores growing congressional unease over cryptocurrency’s role in global finance.
With digital assets increasingly used for cross-border payments, regulators worry about their exploitation by adversarial states and non-state actors. Blumenthal framed Binance as a “repeat offender,” suggesting the case could influence broader policy on virtual asset oversight.
As the probe unfolds alongside potential Justice Department deadlines, it signals continued pressure on major exchanges to demonstrate ironclad adherence to sanctions regimes.
Industry observers note that while crypto offers innovation, high-profile lapses like these risk eroding trust and inviting stricter rules. Whether Binance can satisfy the subcommittee’s demands may determine if this remains a preliminary review or escalates into deeper legislative or enforcement action.