US Treasury’s First GENIUS Rule Reshapes Stablecoin Control

The US Treasury GENIUS stablecoin rule story is less about a finished mandate than about who will control the biggest dollar tokens once the law is operational. Treasury opened implementation, but the GENIUS Act already set the scale line that can push major issuers out of state oversight.

Treasury’s first move was a comment process, not a final mandate

Trump signed the GENIUS Act into law on July 18, 2025, making it the first U.S. federal law to set stablecoin guardrails. Treasury’s first formal implementation action followed in an Advance Notice of Proposed Rulemaking published for September 19, 2025.

In that Federal Register notice, Treasury said it was seeking comment on implementation questions and explicitly said the ANPRM did not itself impose new GENIUS requirements. Based on the House section-by-section summary, that means Treasury opened the fight over control while the statute had already drawn the main boundary.

The law turns scale into a control threshold for issuers

The House Financial Services Committee summary says qualified issuers can stay under certified state regimes only up to $10 billion in outstanding payment stablecoins; above that line they must move into the federal framework, win permission to remain state-supervised, or stop issuing new coins until they drop back under the cap.

The $10 billion threshold changes the meaning of control because an issuer may still mint the token while losing the ability to keep reserves, reporting, and supervision under a state regime. That is a different structural pressure than the macro shock in Moody’s forced-selling trigger or the geopolitical selloff in Bitcoin’s drop to $66K.

The same House summary requires permitted issuers to hold one-to-one reserves backed by cash, insured deposits, short-term Treasuries, certain repos, money market funds invested only in permitted assets, or similar liquid federal assets approved by the regulator. It also ties those issuers to Bank Secrecy Act obligations, including AML programs, suspicious activity monitoring, sanctions compliance, and the ability to block, freeze, and reject illicit transactions.

A second scale marker sits at $50 billion in outstanding payment stablecoins, where the statute adds an annual audit trigger for the largest issuers. By linking a $50 billion balance to an added audit duty, the law makes compliance intensity rise with size.

Implementation now decides how hard that federal hand becomes

Treasury’s March 2026 report to Congress said the department reviewed more than 220 public comments after its August-October 2025 request for comment on innovative tools for detecting illicit digital-asset activity. That comment file shows the market is still fighting over how the law’s thresholds will translate into surveillance, sanctions, and foreign issuer rules.

Coin Center said parts of Treasury’s report were encouraging, but warned that identity-linked stablecoin monitoring could concentrate too much visibility inside the compliance stack. That concern is closer to operating control than sentiment trades like the recent bearish Bitcoin Q2 warning.

Another date to watch is July 18, 2028, when the Treasury notice says digital asset service providers face restrictions on offering or selling non-permitted payment stablecoins. For issuers and exchanges, that 2028 start date matters because the $10 billion control threshold will already have sorted who can scale on compliant rails.

Disclaimer: This article is for informational purposes only and does not constitute financial advice.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.