Blab Crypto
Congress Moves to Ban Lawmakers from Prediction-Market Trading, Platforms Back the Measure
In a decision that could redefine how politics intersects with speculative finance, the U.S. Senate adopted a rule on late April 2026 that bars senators and their staff from trading on prediction‑market platforms such as Polymarket and Kalshi. The resolution, passed by unanimous consent, takes effect immediately and marks the first legislative step toward preventing lawmakers from leveraging non‑public information to profit from events they can influence.
The Senate’s action is already being mirrored in the House, where Representative Bryan Steil, chair of the House Administration Committee, is attaching a prohibition on prediction‑market trading to H.R. 7008. That broader bill would also restrict members’ individual stock trading and requires a public disclosure of intent to sell at least seven days before completing a transaction. A vote on the House measure is slated for the summer.
The Senate rule follows a string of insider‑trading incidents involving political candidates and a military officer. Kalshi suspended and fined a U.S. Senate candidate and two House candidates for betting on races in which they possessed privileged knowledge. Separately, a U.S. Army Special Forces master sergeant was indicted for using classified information to place Polymarket bets related to the operation that captured Venezuelan leader Nicolás Maduro.
H.R. 7008 would bar members of Congress, their spouses and dependents from buying individual stocks and imposes penalties of the greater of $2,000 or 10 % of the investment’s value. Steil plans to extend the same prohibition to prediction‑market contracts, arguing that lawmakers should not bet on outcomes they can directly affect.
Other proposals are gaining traction. The PREDICT Act would bar the president, vice president and all 535 members of Congress from trading on prediction markets. Representative Ritchie Torres introduced the Campaign Funds Integrity Act of 2026, which would criminalize the use of campaign funds for prediction‑market gambling and impose up to five years of imprisonment. Senators Adam Schiff and John Curtis have introduced a bipartisan bill that would ban prediction markets from listing sports‑betting and casino‑style contracts.
The platforms most affected have expressed support. Polymarket said it was in full support of the Senate rule, noting that its terms of service already prohibit such conduct and calling the legislation a step forward for the industry. Kalshi’s co‑founder, Tarek Mansour, said the company already blocks members of Congress and enforces against insider trading, and called the Senate rule a “great step to increase trust in our markets.” The companies argue that accepting a ban on lawmakers will help demonstrate that prediction markets can operate with integrity.
Enforcement will differ between centralized and decentralized venues. Kalshi, a CFTC‑regulated designated contract market, can identify users through know‑your‑customer procedures and has already blocked lawmaker accounts. Polymarket operates on the Polygon blockchain and relies on pseudonymous wallets, making it harder to verify whether a particular wallet belongs to a member of Congress. The legislation targets the officials rather than the venues, so the bans would rely on congressional ethics rules and potential criminal penalties rather than on platform‑level enforcement.
Prediction markets occupy a gray area between gambling and financial trading. The CFTC regulates them as commodity‑futures markets, allowing nationwide listing of event contracts. Congress is debating whether to restrict sports‑betting and casino‑style contracts and how to handle decentralized platforms that operate outside U.S. jurisdiction. The Senate and House bills on lawmakers are the most immediate and bipartisan reforms, but they do not address these structural questions.
The lawmaker bans represent a clear integrity improvement. By preventing members of Congress from betting on outcomes they can influence, the rules close a loophole that has been exploited in real cases. The measures also signal that prediction markets have reached a level of maturity that warrants federal oversight. Whether the industry will adapt to the new regulatory environment or face further restrictions remains to be seen, but the current legislation sets a precedent for future scrutiny of how political actors interact with emerging financial instruments.
In short, the Senate rule and the House proposal are the first steps in a broader regulatory review of prediction markets. The bans are likely to pass, given bipartisan support and the platforms’ endorsement, and they will limit the ability of lawmakers to profit from insider knowledge. The more complex questions about the legality of sports‑betting contracts, decentralized venues, and the overall regulatory framework will be addressed in future congressional sessions.
The Senate’s action is already being mirrored in the House, where Representative Bryan Steil, chair of the House Administration Committee, is attaching a prohibition on prediction‑market trading to H.R. 7008. That broader bill would also restrict members’ individual stock trading and requires a public disclosure of intent to sell at least seven days before completing a transaction. A vote on the House measure is slated for the summer.
The Senate rule follows a string of insider‑trading incidents involving political candidates and a military officer. Kalshi suspended and fined a U.S. Senate candidate and two House candidates for betting on races in which they possessed privileged knowledge. Separately, a U.S. Army Special Forces master sergeant was indicted for using classified information to place Polymarket bets related to the operation that captured Venezuelan leader Nicolás Maduro.
H.R. 7008 would bar members of Congress, their spouses and dependents from buying individual stocks and imposes penalties of the greater of $2,000 or 10 % of the investment’s value. Steil plans to extend the same prohibition to prediction‑market contracts, arguing that lawmakers should not bet on outcomes they can directly affect.
Other proposals are gaining traction. The PREDICT Act would bar the president, vice president and all 535 members of Congress from trading on prediction markets. Representative Ritchie Torres introduced the Campaign Funds Integrity Act of 2026, which would criminalize the use of campaign funds for prediction‑market gambling and impose up to five years of imprisonment. Senators Adam Schiff and John Curtis have introduced a bipartisan bill that would ban prediction markets from listing sports‑betting and casino‑style contracts.
The platforms most affected have expressed support. Polymarket said it was in full support of the Senate rule, noting that its terms of service already prohibit such conduct and calling the legislation a step forward for the industry. Kalshi’s co‑founder, Tarek Mansour, said the company already blocks members of Congress and enforces against insider trading, and called the Senate rule a “great step to increase trust in our markets.” The companies argue that accepting a ban on lawmakers will help demonstrate that prediction markets can operate with integrity.
Enforcement will differ between centralized and decentralized venues. Kalshi, a CFTC‑regulated designated contract market, can identify users through know‑your‑customer procedures and has already blocked lawmaker accounts. Polymarket operates on the Polygon blockchain and relies on pseudonymous wallets, making it harder to verify whether a particular wallet belongs to a member of Congress. The legislation targets the officials rather than the venues, so the bans would rely on congressional ethics rules and potential criminal penalties rather than on platform‑level enforcement.
Prediction markets occupy a gray area between gambling and financial trading. The CFTC regulates them as commodity‑futures markets, allowing nationwide listing of event contracts. Congress is debating whether to restrict sports‑betting and casino‑style contracts and how to handle decentralized platforms that operate outside U.S. jurisdiction. The Senate and House bills on lawmakers are the most immediate and bipartisan reforms, but they do not address these structural questions.
The lawmaker bans represent a clear integrity improvement. By preventing members of Congress from betting on outcomes they can influence, the rules close a loophole that has been exploited in real cases. The measures also signal that prediction markets have reached a level of maturity that warrants federal oversight. Whether the industry will adapt to the new regulatory environment or face further restrictions remains to be seen, but the current legislation sets a precedent for future scrutiny of how political actors interact with emerging financial instruments.
In short, the Senate rule and the House proposal are the first steps in a broader regulatory review of prediction markets. The bans are likely to pass, given bipartisan support and the platforms’ endorsement, and they will limit the ability of lawmakers to profit from insider knowledge. The more complex questions about the legality of sports‑betting contracts, decentralized venues, and the overall regulatory framework will be addressed in future congressional sessions.
