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Senator Richard Blumenthal (D-CT), Ranking Member of the Senate Permanent Subcommittee on Investigations, sent separate letters to the Department of Justice and the Financial Crimes Enforcement Network (FinCEN, the Treasury bureau responsible for anti-money laundering enforcement) on Friday, demanding updates on two compliance monitors overseeing Binance operations, as a formal DOJ investigation into alleged Iran sanctions violations moves forward and questions mount about whether the exchange misrepresented its exposure to Congress.

The letters ask specifically about Frances McLeod, a founding partner at Forensic Risk Alliance serving as the DOJ-appointed monitor, and Sharon Cohen Levin, a Sullivan & Cromwell partner appointed by FinCEN. Blumenthal asked whether either monitor has filed reports on misconduct or compliance violations. Both declined to comment. "I am writing with concern over mounting allegations of dangerously lax anti-money laundering prevention by Binance," Blumenthal wrote in the letters.

The senator's focus on the monitors follows an April 1 letter he sent directly to Binance CEO Richard Teng, accusing the exchange of potentially misrepresenting facts to Congress. That letter cited a sharp discrepancy: Binance claimed roughly $110,000 in direct transactions with Iranian crypto platforms, while investigative reporting from the Wall Street Journal and Fortune documented approximately $1.7 billion in flows to Iran-linked entities. On March 11, 2026, the DOJ confirmed a formal investigation into whether Iranian networks used Binance to move funds in violation of U.S. sanctions.

The alleged Iran-linked transfers are notable for their method. Investigators identified large movements conducted primarily in USDT (Tether's dollar-pegged stablecoin) on the Tron blockchain, a corridor known in sanctions enforcement cases for its speed, low transaction fees, and relative opacity. According to Fortune's March 2026 reporting, a single VIP account linked to a Chinese entity transferred $439 million in USDT on Tron to wallets connected to Iran's Islamic Revolutionary Guards Corps. A second Chinese VIP account sent nearly $200 million to Iran-linked intermediaries in just two months at the end of 2024. Binance's internal compliance team reportedly flagged roughly 2,000 accounts tied to Iranian entities; some of those accounts were internally tagged with the notation "Don't block. Internal accounts," according to Blumenthal's April 1 press release. The transfers were allegedly routed in part through two partner companies, Hexa Whale and Blessed Trust. Binance reportedly granted Hexa Whale VIP status despite internal suspicions of document fraud, and Blessed Trust was not offboarded until five months after initial compliance warnings. At least five compliance investigators who raised those findings were fired or suspended in late 2025; Binance says the dismissals resulted from data protection policy violations.

Binance has rejected the allegations in full. The company described the reporting as "demonstrably false, unsupported by credible evidence" and filed a defamation lawsuit against Dow Jones, the Wall Street Journal's publisher, in the Southern District of New York. On the specific figures, Binance stated that "the $1.7 billion in flagged funds did not originate at Binance and did not end at Binance." The exchange self-reported a 97 percent reduction in sanctions exposure since 2024 and says it employs more than 1,500 compliance staff globally.

The broader context makes the monitor question consequential beyond Washington. Binance entered its 2023 settlement after pleading guilty to conspiracy to violate the Bank Secrecy Act and the International Emergency Economic Powers Act, among other charges. The total penalty reached $4.3 billion, covering DOJ, OFAC, FinCEN, and CFTC payments. OFAC found 1,667,153 apparent violations across Iran, North Korea, and Syria sanctions programs and classified the conduct as egregious, OFAC's highest severity tier, applied in cases where violations were not voluntarily self-disclosed. OFAC also found that Binance senior officials had actively encouraged users to use VPNs to circumvent geofencing, an aggravating factor documented in the November 2023 OFAC Settlement Agreement. Two monitors, one with a three-year DOJ mandate beginning May 2024 and one with a five-year FinCEN mandate, were core conditions of that settlement. By September 2025, Bloomberg reported that Binance was in advanced talks with the DOJ to remove the Forensic Risk Alliance monitor one to two years ahead of schedule, a move Democratic senators linked to Binance's ties to the Trump administration, including its partnership with World Liberty Financial, a venture co-owned by Trump's sons. Founder Changpeng Zhao, who had paid a personal fine of $50 million and served a four-month prison sentence as part of the 2023 settlement, received a presidential pardon in October 2025.

For users outside the United States, the status of that oversight carries direct practical consequences. Binance serves roughly 22 million Nigerian accounts and accounts for approximately 80 percent of that country's crypto users, many of whom rely on the platform for remittances and access to dollar-denominated savings amid persistent naira weakness. Nigeria is simultaneously pursuing a $79.51 billion economic damages lawsuit against Binance, with the next court hearing scheduled for May 12, 2026, and a separate $2 billion back-tax claim filed by Nigeria's revenue authority covering 2022 and 2023. The 2024 detention of Tigran Gambaryan, Binance's former Head of Financial Crime Compliance, by Nigerian authorities has established a precedent for how U.S. compliance failures can expose Binance staff to legal risk in African jurisdictions, according to reporting by Fortune and The Record.

In South Asia, Pakistan's Virtual Asset Regulatory Authority granted Binance a No Objection Certificate in December 2025. Then, on April 15, 2026, two days before Blumenthal's letters, Pakistan separately lifted a seven-year ban on banks servicing virtual asset providers in a sector-wide policy shift. Binance has also signed a memorandum of understanding to explore tokenizing up to $2 billion in Pakistani government bonds and commodity reserves, a commitment that illustrates the depth of the bilateral relationship at precisely the moment U.S. oversight of the exchange is under heightened scrutiny. Meanwhile, an estimated 600,000 Bangladeshis access Binance through VPNs despite a national ban, with no regulatory safety net if compliance standards slip. India, which readmitted Binance in August 2024 after a seven-month ban tied to earlier compliance failures, required the exchange to pay $2.25 million in penalties and register with India's Financial Intelligence Unit (FIU-IND) as conditions of re-entry; Indian authorities are now probing more than 400 high-value traders for tax evasion on the platform.

On February 27, 2026, nine Senate Democrats, including Senators Elizabeth Warren, Richard Blumenthal, Ruben Gallego, Angela Alsobrooks, and Mark Warner, wrote to Treasury Secretary Scott Bessent and Attorney General Pam Bondi, warning that "our illicit finance controls are dangerously compromised if enormous sums can flow through Binance to terrorist groups or sanctions evaders." With Bloomberg also reporting in early April 2026 that senior Binance compliance staff have been leaving financial crime monitoring roles, the status of the two court-ordered monitors has drawn renewed attention from lawmakers and regulators on multiple continents. Whether the two monitors remain in place, and whether they have formally flagged any violations, may determine how regulators in Nigeria, India, Pakistan, and elsewhere calibrate their own posture toward Binance, the world's largest crypto exchange by trading volume, which held approximately 38 percent of global centralized exchange market share as of Q2 2025, according to CoinLaw.