U.S. Treasury Proposes Bringing Stablecoin Issuers Under AML and Sanctions Framework

The U.S. Treasury this week released a proposed rule that, for the first time, would bring stablecoin issuers under the anti-money laundering (AML) and sanctions compliance framework of the Bank Secrecy Act. The new rule requires issuers to establish customer identification (KYC) procedures, report suspicious transactions, and ensure their tokens do not flow to sanctioned entities or illicit channels such as mixers. The move is seen as a systemic regulatory response to the rapidly growing stablecoin market, which now exceeds $200 billion in total market capitalization.

At the core of the rule is the classification of stablecoin issuers as "money services businesses" (MSBs) akin to traditional financial institutions, rather than mere technology providers. This means issuers would be responsible for the entire transaction chain of every token they issue, including on-chain transaction monitoring, sanctions list screening (e.g., OFAC SDN), and counterparty risk identification. For major players like USDC issuer Circle, USDT issuer Tether, and PayPal's PYUSD, compliance costs would rise significantly, potentially driving industry consolidation.

From a cross-border settlement perspective, stablecoins have become a key tool for bypassing the traditional correspondent banking network, especially in dollar-scarce regions like Latin America and Africa. If the rule takes effect, issuers would need to screen both parties to a transaction for sanctions before settlement, undermining the "instant" advantage of stablecoins—each transaction might require validation through a compliance engine, introducing delays akin to traditional wire transfers. On the other hand, a clear regulatory framework could attract more institutional capital, as compliance uncertainty has been a major barrier to institutional adoption.

For the agent payment sector that OceanAlt focuses on, the ripple effects are more profound. AI agents—such as automated procurement systems and algorithmic trading bots—are increasingly using stablecoins for machine-to-machine (M2M) payments, with protocols like x402 already enabling on-chain settlement triggered by HTTP 402 status codes. If issuers are compelled to enforce counterparty screening, agent payments would face a new bottleneck of "pre-settlement compliance": Know Your Agent (KYA) would no longer be optional but must be embedded into the payment flow. For example, when an AI agent representing a corporate purchase initiates a USDC payment, the issuer would need to verify the agent's authorization mandate and the payee whitelist; otherwise, settlement could be refused for violating sanctions rules.

The rule also implies a retrospective logic around "on-chain taint." If a stablecoin address has interacted with a mixer, issuers may be required to freeze associated funds, affecting the liquidity of agent payments—an agent might be unable to complete a payment due to the historical taint of the recipient's address. The industry needs to develop real-time compliance technologies, such as pre-transaction screening and attribution analysis, to balance speed and security. The RAP (Risk-Adjusted Payments) standard could serve as a reference framework, using tiered risk controls (e.g., simplified review for small transactions) to preserve agent payment efficiency.

For stakeholders, banks and traditional payment service providers (PSPs) may view the rule as a positive development, as stricter stablecoin regulation would narrow the compliance gap with licensed institutions. Crypto-native firms, however, face pressure, particularly smaller issuers that may struggle to afford compliance infrastructure costs. The Treasury will collect public comments over the next 60 days, and the final rule may be adjusted, but the direction is clear: stablecoins are no longer in a regulatory gray zone.

For mainland China, this rule does not apply directly, but Chinese regulators' cautious stance toward stablecoins may be reinforced by the U.S. move. RMB settlement in cross-border trade still relies primarily on traditional channels, and the compliance push for stablecoins could indirectly reshape the global dollar settlement landscape, though it has no material short-term impact on the path of RMB internationalization.