Democrats swept both chambers of Congress this week, and the CLARITY Act, the bill Jamie Dimon vowed to fight over stablecoin yield, now has to survive a Congress that didn't write it.

JPMorgan's chief executive spent much of 2026 trying to kill one provision inside the crypto market structure bill known as the CLARITY Act: the loophole that lets platforms like Coinbase pay yield on stablecoin balances. On May 29, Dimon told CoinDesk the banking industry would fight the bill as written, warning that "the banks will not accept it" if lawmakers didn't close what he saw as a backdoor around deposit competition. He went further with Coinbase chief executive Brian Armstrong directly, telling reporters Armstrong was "full of shit" for spending what Dimon pegged at hundreds of millions of dollars lobbying Washington on the issue, according to The Block.

Now the ground has shifted entirely. Democrats won control of the House and the Senate in Tuesday's midterms, a result CNN and NBC News called by Thursday, with Democrats on track for more than 256 House seats after flipping over 40 seats from Republicans, one of the party's largest majorities in nearly two decades. The CLARITY Act passed the House in July 2025 under Republican control, with 78 Democrats crossing over to support it. The version Dimon has been battling all year was built for a Republican Senate and a Republican White House. That Congress is gone in January.

The dispute traces back to the GENIUS Act, the stablecoin law President Trump signed in July 2025. That law bars stablecoin issuers themselves from paying yield directly, but it leaves a gap: third parties, including exchanges like Coinbase, can still pay rewards tied to stablecoin holdings. Banks have spent the better part of 2026 trying to get CLARITY, the follow-on market structure bill, to close that gap. Crypto firms have spent just as much lobbying to keep it open, arguing yield is what makes stablecoins competitive with a savings account in the first place.

For JPMorgan and its peers, it's about deposits. A bank's core business runs on cheap, sticky customer cash sitting in checking and savings accounts. A stablecoin that pays 4% for essentially no effort is a direct substitute for that cash, and Dimon has made no secret of seeing it that way. Senator Cynthia Lummis, a Republican and one of the bill's architects, pushed back hard on Dimon's framing earlier this year, according to crypto.news, arguing the banking lobby was trying to protect deposit margins under the cover of consumer protection.

Bernstein analysts noted the stock briefly slipped toward $100 before stabilizing near $104 in premarket Wednesday trading. Coinbase fell about 8% in sympathy because its USDC rewards program pays yield on balances, the exact structure the draft targets. - stablecoin yield ban legislation impact on crypto - Circle stock price drop Clarity Act concerns

Neither side got a resolution before voters went to the polls. TD Cowen had flagged back in the spring that Senate Democrats could simply run out the clock and block a floor vote until after the midterms, betting that a Democratic majority would let them rewrite the bill on more favorable terms. That bet paid off.

A lame duck session is still technically possible

Congress doesn't change hands until January, which leaves a narrow lame duck window for Republicans to try to force CLARITY through before Democrats take the gavel. Nobody tracking the bill closely expects it. A bill this contested, over an issue banks and crypto firms have spent a full year fighting about, is not the kind of thing an outgoing majority rushes through in the weeks before it loses power. If it fails now, the bill doesn't just die, it gets rewritten from scratch by a Congress with a different set of priorities and a different set of lobbyists in the room.

That matters more than it might seem, because the market this bill is supposed to regulate kept growing while Washington argued. The stablecoin market hit a record $322 billion in circulation this year, according to data cited by Cryptobriefing, large enough to exceed the foreign currency reserves of more than 90 countries including the UK and Canada. On Ethereum alone, stablecoin transfer volume hit $2.82 trillion in October, a figure StartupFortune covered as the network's own record. Tether, the largest issuer, posted $1.5 billion in quarterly profit in the same stretch. None of that growth waited for Congress to settle the yield question. It won't pause now either.

Frankly, a Democratic sweep doesn't obviously help Coinbase's side of this fight. Progressive Democrats like Senator Elizabeth Warren have been as skeptical of crypto yield products as any bank lobbyist, just for different reasons, worried about consumer protection and systemic risk rather than deposit competition. A new Democratic majority could just as easily write a stricter yield ban into a rewritten bill as it could side with Coinbase. What's certain is that the specific compromise lawmakers were negotiating all year, the one Dimon was fighting line by line, no longer has a path to the floor as written. Whoever controls the next version of this bill starts from a blank page.

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