The Senate rejected a crypto market structure bill on September 15 after Republicans incorporated 126 changes Democrats requested over 15 months of talks. The vote was 46-43. It needed 60.
The Digital Asset Market Clarity Act fell 14 votes short of the threshold to begin floor debate. Senator Cynthia Lummis said "It's over" minutes after the result. The bill would have split digital assets into CFTC-regulated commodities and SEC-regulated securities, giving Bitcoin, Ethereum, Solana, and XRP statutory classification that survives changes in administration.
126 Amendments Accepted
Republicans released a substitute text on September 13 adding every substantive change Democrats submitted since July 2025. The 635-page draft extended ethics rules to presidents, vice presidents, Congress, judges, and their spouses. It gave state attorneys general enforcement authority for conflict-of-interest violations and granted the Treasury secretary 18 months of authority to restrict stablecoin rewards during bank runs.
The CLARITY Act rewrite incorporated a proposal from Senators Thom Tillis and Ruben Gallego requiring federal officials to divest crypto or use blind trusts. Trump agreed to the ethics language, lifting passage odds on Polymarket from 22% to 34%.
Key Democrats Voted No
Democrats who worked directly on negotiations voted no. Kirsten Gillibrand, Mark Warner, Cory Booker, Raphael Warnock, Ruben Gallego, Angela Alsobrooks, and Catherine Cortez Masto all opposed cloture. The central dispute involved divestment from existing revenue streams, not merely prospective bans. One Democratic counteroffer submitted Monday night was rejected Tuesday morning, ending talks hours before the vote.
What Happens Next Is Unclear
Senator Lummis said negotiations may be over after a year of work and 126 accepted requests. The bill passed the House in July 2025 with 294 votes and cleared the Senate Banking Committee in May 2026 on a 15-9 vote, but stablecoin provisions and DeFi developer liability language divided Democrats.
Without the CLARITY Act, the March 2026 joint SEC-CFTC interpretation naming 16 tokens as commodities remains the regulatory framework. That guidance can be reversed by future commissioners without congressional approval. The SEC's September 1 Regulation Crypto Assets proposal is the alternative pathway, but it requires a lengthy rulemaking process.
Bitcoin traded between $76,800 and $77,500 on September 15. Bernstein projected a 10-25% correction if cloture failed. Polymarket odds of passage in 2026 dropped from 34% to 17% after the vote. The Senate begins its state work period October 5. Election Day is November 3. A lame-duck session after the midterms would be the next realistic window, but passage during a lame duck is historically difficult.