On June 9, the public comment period for a pivotal US Treasury proposal concluded, marking a critical juncture in the regulatory trajectory of digital assets. Hyperliquid and the crypto investment firm Paradigm submitted a joint letter to the Treasury Department, challenging specific provisions within the anti-money laundering and sanctions framework tied to the GENIUS Act. The core contention is that the proposed rules, if enforced as written, would compel regulated dollar-backed stablecoin issuers to withdraw from Decentralized Finance ecosystems entirely. This intervention highlights a growing divergence between federal enforcement goals and the technical realities of permissionless blockchain networks.

The regulatory pressure stems from a joint rule proposed in April by the Financial Crimes Enforcement Network (FinCEN) and the Office of Foreign Assets Control (OFAC). These agencies aim to operationalize the AML and sanctions provisions mandated by the GENIUS Act, which was signed into law in 2025. The framework seeks to treat permitted stablecoin issuers with the same compliance rigor as traditional banks, requiring them to implement robust programs to detect and prevent illicit finance. Under this regime, issuers would be obligated to block, freeze, or reject any transaction violating sanctions laws, extending their liability beyond direct customer interactions into the broader secondary market.

Hyperliquid and Paradigm argue that while compliance in the primary market is feasible, applying identical standards to secondary-market activity on public blockchains creates an impossible burden. In the primary market, issuers maintain direct relationships with customers and possess the necessary user identification data.

However, once stablecoins enter the secondary market, issuers typically only observe wallet addresses and transaction hashes without the practical ability to identify every participant. Data compiled by Woofun AI indicates that the sheer volume and pseudonymous nature of on-chain interactions make it technically unviable for issuers to police every transfer effectively.

The firms contend that the risk of being held liable for secondary-market transactions will force issuers to retreat to permissioned environments where all participants are known and verified. Such a shift would fundamentally alter the architecture of the crypto economy, likely causing a precipitous drop in stablecoin activity on decentralized exchanges and lending protocols. If US-issued stablecoins become incompatible with open DeFi applications, users and liquidity would inevitably migrate to offshore alternatives operating outside US regulatory oversight. This outcome would paradoxically weaken the position of dollar-backed stablecoins at a time when the US government aims to cement its leadership in global digital payments.

Treasury officials have defended the April proposal as a necessary safeguard for the financial system, balancing innovation with security. Treasury Secretary Scott Bessent stated that the rules are designed to protect the system while supporting payment stablecoin innovation. The administration argues that stablecoins have reached a level of systemic importance in global payments that necessitates stricter procedures akin to those enforced by traditional financial institutions. The proposed rule requires issuers to adopt AML compliance measures that address money laundering, sanctions evasion, and other illicit-finance risks associated with digital assets.

With the GENIUS Act establishing a comprehensive federal framework, federal agencies are now focused on finalizing these rules, with a target implementation deadline of January 2027.

Concurrently, discussions continue regarding the CLARITY Act, a separate legislative bill intended to further define responsibilities for developers, platforms, and digital asset intermediaries. Woofun AI notes that the industry's feedback, particularly from major players like Hyperliquid, will be scrutinized closely as regulators attempt to translate the broad mandates of the GENIUS Act into workable, enforceable regulations.

The debate ultimately centers on the boundary of responsibility: where does an issuer's obligation end and the user's begin? Hyperliquid and Paradigm assert that the current proposal blurs this line, creating a compliance environment that is near impossible to enforce on public blockchains. As regulators evaluate the final version of the framework, the industry watches to see if the Treasury will adjust its stance to preserve the viability of DeFi or if the strict application of bank-like rules will effectively wall off decentralized finance from the US dollar ecosystem.