The U.S. Department of the Treasury has formally commenced the implementation of the Guiding and Establishing National Innovation for U.S. Stablecoins (GENIUS) Act, a pivotal piece of legislation enacted in July 2025. This significant step includes the release of its first notice of proposed rulemaking (NPRM), initiating a 60-day period for public comment. The comprehensive 87-page proposal meticulously outlines the criteria by which the Treasury will assess whether state-level stablecoin regulatory regimes are deemed “substantially similar” to the overarching federal framework.

A core tenet of the GENIUS Act permits stablecoin issuers with less than $10 billion in outstanding supply to opt for state-level regulation. This is contingent upon those state regimes either meeting or exceeding the established federal standards. The newly proposed rule establishes broad guiding principles for this determination, while simultaneously affording states considerable flexibility in critical areas such as licensing, ongoing supervision, and enforcement mechanisms.

The Treasury's document clearly differentiates between “uniform requirements” and “state-calibrated requirements.” Uniform requirements, such as mandating reserve backing and adherence to anti-money laundering (AML) compliance protocols, are expected to be consistent across all frameworks. In contrast, “state-calibrated requirements” allow local regulators discretion in areas like capital and risk management standards. Notably, the proposal firmly anchors the federal benchmark to existing rules and interpretations issued by the Office of the Comptroller of the Currency (OCC), underscoring the OCC's central role in the future oversight of nonbank stablecoin issuers that transition to federal supervision once they surpass the $10 billion threshold.

Furthermore, the rule clarifies that state frameworks are permitted to impose requirements that exceed federal standards, provided these do not conflict with federal law or undermine the overall comparability and effectiveness of the regulatory landscape. State regimes are explicitly prohibited from weakening core disclosure standards, necessitating that issuers publish detailed reserve composition reports at least monthly, aligning with federal frequency requirements. Similarly, specific naming restrictions will be uniformly applied across both state and federal frameworks, preventing state-regulated issuers from utilizing prohibited terms in their stablecoin branding.

The proposal also emphasizes the foundational nature of federal law, stating that any future legislation passed by Congress governing stablecoin issuers will automatically extend its applicability to state-regulated firms, unless explicitly specified otherwise. The 2025 passage of the GENIUS Act marked a watershed moment in U.S. crypto policy, establishing the nation's first federal framework for stablecoins, mandating full reserve backing, AML compliance, and regular disclosures. This legislation is widely regarded as a crucial step in legitimizing dollar-backed stablecoins and strengthening U.S. monetary dominance.

Following its enactment, attention has increasingly shifted towards the practical implementation of the GENIUS Act and the development of follow-on legislation. Treasury reports issued under the Act are actively expanding oversight tools, including measures specifically designed to combat illicit finance and monitor crypto mixers. Concurrently, broader market structure efforts have encountered impediments, largely due to ongoing disputes between traditional banks and emerging crypto firms, particularly concerning whether stablecoins should be permitted to offer yield. In parallel, Congress is advancing complementary legislative initiatives, such as the Clarity Act, which aims to clearly define the jurisdictional boundaries of the Securities and Exchange Commission (SEC) and the Commodity Futures Trading Commission (CFTC), signaling a broader, concerted push towards establishing a comprehensive regulatory framework for all digital assets.