US lawmakers have formally demanded a federal investigation into Binance over alleged transfers totaling $1.7 billion to entities linked to Iran, raising the specter of a renewed regulatory crackdown on the world's largest digital asset exchange.

The request, signed by 11 legislators including Sens. Chris Van Hollen and Elizabeth Warren, was sent to Treasury Secretary Scott Bessent and Attorney General Pam Bondi. The lawmakers are seeking a formal probe into whether Binance violated the terms of its historic 2023 settlement, which included a $4.3 billion fine and the removal of founder Changpeng Zhao as CEO.

The allegations center on findings that investigators allegedly uncovered at least two Binance accounts used to channel assets to Iran-backed Houthis and the Islamic Revolutionary Guard Corps. Furthermore, reports cited by the senators suggest Iranian nationals accessed more than 1,500 Binance accounts. The legislators argue these incidents indicate a "broader deterioration" in the exchange's compliance functions, posing a direct threat to national security.

Threat to 2023 Settlement and Compliance Framework

The timing of these allegations is critical. Under the plea agreement reached in 2023, Binance agreed to stringent oversight by a DOJ-mandated independent compliance monitor. The lawmakers warn that if authorities determine the exchange breached these monitorship terms, the firm could face catastrophic legal and financial repercussions.

"These allegations raise grave concerns that poor illicit finance controls at Binance remain a significant threat to national security," the senators stated in their letter. "Our illicit finance controls are dangerously compromised if enormous sums can flow through Binance to terrorist groups or sanctions evaders." The lawmakers emphasized that the firm controls the world's largest digital asset exchange, making it essential that bad actors cannot benefit from its platform.

Beyond the specific Iran-linked transfers, the legislators highlighted a broader pattern of risky behavior. They pointed to Binance's launch of payment cards in the former Soviet Union as a potential backdoor for Russian sanctions evasion. "In light of these issues, we are deeply troubled by the prospect that Binance may once again be prioritizing profits over its compliance obligations," the lawmakers argued.

Binance Defends Controls, Cites Sharp Decline in Exposure

Binance has issued a fierce rebuttal to the allegations, defending its internal controls and characterizing the reports as a distorted view of standard digital asset platform processes. The exchange asserts that its sanctions-related exposure dropped 96.8% over an 18-month period.

According to the firm, sanctions exposure fell from 0.284% in January 2024 to 0.009% in July 2025. Binance linked this progress to its "best-in-class" compliance program, stating that in the specific incidents cited by the media, it acted proactively, mitigated risks, offboarded the offending accounts, and coordinated with law enforcement. "The facts are these: Binance's compliance program is effective and it worked here. Any statement to the contrary is simply wrong," the exchange concluded.

The exchange argues that the recent media reports fundamentally misunderstand the control processes required for digital asset platforms. While the firm maintains its compliance framework is robust, the lawmakers' letter suggests that the alleged flow of funds to sanctioned entities indicates a failure of those very guardrails.

Regulatory Deadline and Market Implications

The pressure on Binance is now institutionalized with a hard deadline. Lawmakers have given the Treasury Department and the DOJ until March 13, 2026, to detail the results of their investigations. If the agencies confirm that the exchange facilitated the alleged transfers or violated its monitorship terms, the consequences could extend far beyond the initial $4.3 billion fine, potentially including further penalties or operational restrictions.

The allegations arrive amid rising geopolitical tensions in the Middle East, adding a layer of urgency to the regulatory scrutiny. While Binance claims its compliance metrics have improved drastically, the lawmakers' insistence on a formal probe suggests that the perceived gap between reported metrics and alleged illicit activity remains a significant point of contention for US regulators.

Market reaction has been muted, with Bitcoin trading at $66,150, up 1.7%, though sentiment remains in Extreme Fear at 14/100. The outcome of this investigation will likely serve as a definitive test for the regulatory landscape of digital assets, determining whether the exchange's compliance promises hold up under the weight of federal scrutiny.

Source: BeInCrypto | Analysis by Rumour Team