Ban prediction market participation by his congressional staff.

Congressman Moulton also separately announced a ban on prediction market participation by his congressional staff, believed to be the first such policy in Congress.

Moulton announced a policy barring his congressional staff from participating in prediction markets.

Moulton and McGovern Demand CFTC Explain Why It Has Not Acted Against Illegal Offshore War Betting Markets | Congressman Seth Moulton
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Congressman Moulton Formalizes Office Policy Banning Staff Participation in Prediction Markets

Moulton announced an office-wide policy effective immediately prohibiting staff from participating in prediction market platforms to trade or hold positions on political, legislative, regulatory, geopolitical outcomes, or other information learned in an official capacity.

Congressman Moulton Formalizes Office Policy Banning Staff Participation in Prediction Markets | Congressman Seth Moulton
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introduced the Campaign Event Contract Integrity Act, legislation that would close a loophole that allows campaign insiders to profit off confidential information in political prediction markets

Moulton and Torres introduced legislation to prohibit campaign insiders from trading on political prediction markets using confidential information.

Moulton and Torres Introduce Legislation to Ban Campaign Insiders From Trading on Political Prediction Markets | Congressman Seth Moulton
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The embedded official post states: "Effective today, Congressman Moulton is instituting an office-wide policy prohibiting his congressional staff from participating in prediction market platforms, such as Polymarket and Kalshi."

Moulton's official congressional press account announced an effective-immediately office policy banning his congressional staff from participating in prediction market platforms.

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Rep. Seth Moulton Press Office X post
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Business Insider reported that Democratic Rep. Seth Moulton "recently became the first member of Congress to publicly announce that he would ban his staff from making bets on platforms like Kalshi or Polymarket" and reproduced the official March 25, 2026 Press Office post announcing the office-wide policy.

Independent reporting confirms Moulton publicly announced a staff prediction-market ban and quotes the official office-wide policy language.

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Work on Capitol Hill? Your boss may want to ban you from betting on prediction markets
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Congress.gov identifies Seth Moulton as "Representative Seth Moulton" and lists him as Democratic, House Massachusetts District 6, 114th-119th Congresses, 2015-Present.

Official congressional records establish that Moulton was serving as a U.S. House member for Massachusetts's 6th District during the 119th Congress, the term in which the staff policy was announced.

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Representative Seth Moulton | Congress.gov | Library of Congress
secondary · model gpt-5.5 · confidence 86%