Bryan Steil’s Stop Lawmakers From Predicting Act and Its Ripple Effects on Prediction Market Legitimacy
Wisconsin Rep. Bryan Steil, Chairman of the House Administration Committee, has introduced the Stop Lawmakers From Predicting Act. The draft bill aims to prohibit members of Congress, their spouses, and children from trading politics-related contracts on platforms like Kalshi and Polymarket.
Lawmakers should be writing policy, not wagering on its outcome. This move comes amid growing scrutiny of politicians using nonpublic information for personal gain on prediction markets.
The bill builds directly on the Stop Insider Trading Act that Steil’s committee approved in mid-January. It targets the perception that elected officials are profiting off insider knowledge rather than serving the public. From an operator perspective with eighteen years across iGaming and sportsbook operations, this kind of regulatory signal matters because it shapes how counterparties view platform risk.
Core Provisions and Penalties in the Bill
The legislation bans trading in political and policy-related contracts. Violations trigger fines equal to the transaction’s net gain plus $2,000, or 10% of the transaction’s value, whichever is higher. Lawmakers who leave office without settling would face civil enforcement by the Justice Department.
It extends the prohibition to spouses and children. Public allowance funds, expense accounts, political contributions, or donations cannot be used to pay any fines. Steil’s office highlighted media reports of candidates trading on their own election outcomes.
In April, Kalshi fined and suspended three congressional candidates for betting on their own elections. Earlier this month the platform began requiring some users to disclose job details before trading on political and sports-related events. These steps show platforms already moving to manage insider risk on their own.
The bill is critical to restoring public trust in elected officials. The American people deserve to know their member of Congress is not profiting off insider information.
Insider Trading Cases Fueling the Push
Public anger has grown over alleged politician involvement. Former Senator George Santos faced accusations of trading on his own attendance at the State of the Union address in February. A blockchain analytics firm later identified suspected insiders who made $1.2 million trading on whether the US would launch air strikes on Iran on February 28.
Most of those wallets were funded in the last 24 hours, bet specifically for February 28, and purchased “yes” hours before the strike. Cases like these give the bill its urgency. They also illustrate why prediction markets draw both liquidity and suspicion.
In my experience across European regulated markets, operators price in this kind of regulatory overhead faster than most expect. The same pattern is emerging here. Platforms tighten controls while lawmakers debate broader restrictions.
Risks, Counterarguments, and Operational Limitations
One risk is that the bill could inadvertently spotlight prediction markets and drive more retail participation rather than reduce it. Banning lawmakers might signal that these contracts carry unique informational value, potentially increasing volume from other traders seeking an edge.
Another limitation sits in enforcement. Tracking family trades across pseudonymous wallets is not straightforward. The bill relies on self-reporting and civil action, which may not catch sophisticated actors. Critics could argue it creates a false sense of reform without addressing deeper data gaps.
From the supplier side this kind of ambiguity stalls commercial deals. Tribes and operators watching the space need clear lines before allocating material budget to integrations or partnerships. If the bill passes it might reduce perceived congressional conflicts but it does not resolve underlying questions about whether these contracts are swaps or wagers.
Intersection With CFTC Preemption Fights and State Enforcement
Several US states continue legal campaigns to classify Kalshi and Polymarket services as illegal gambling. The Commodity Futures Trading Commission (CFTC) has pushed back hard, asserting it alone holds regulatory power. The commission argues these contracts are “swaps,” not wagers, and has already attempted to sue some states with more lawsuits possible.
Dozens of states, tribes, and gambling industry officials back Ohio’s bid to take Kalshi to the Supreme Court. Former CFTC Chairman Gary Gensler sided with Ohio in a legal brief, writing “Sports bets are not swaps.”
Steil’s bill lands squarely in this tension. By focusing on congressional trading it implicitly treats prediction markets as legitimate enough to regulate at the federal ethics level. That could bolster the CFTC’s preemption argument by framing these platforms as part of the national financial infrastructure rather than pure gambling. Yet it might also embolden states and tribes to demand stricter licensing if they see uneven federal oversight.
The competitive implication is real. Operators and tribes evaluating market entry must weigh whether federal clarification on swaps reduces state friction or simply layers new compliance costs. Prediction market legitimacy with these groups hinges on whether the eventual rules create a level playing field or carve out exceptions that favor certain participants.
The Bottom Line is that the Stop Lawmakers From Predicting Act highlights genuine trust issues but its passage alone will not settle the larger battle over prediction market status. Watch how the CFTC leverages the ethics conversation in its Supreme Court briefing and whether states respond with fresh enforcement rounds. For tribes, operators, and tech partners the real test is whether any resulting framework delivers operational clarity or simply adds another variable to an already fragmented landscape. Clear rules on insider access and swap classification would accelerate adoption faster than any single ban.
