• Elizabeth Warren gains the Senate Banking panel's top post in January 2027 after the Democratic midterm wins.

• The CFTC ordered Gabriel Perez to repay $107,539.02 with a $65,000 penalty and three-year ban.

• The Justice Department charged Gannon Ken Van Dyke over more than $400,000 in Polymarket bets.

Warren Nears the Senate Banking Chair

Democratic Senator Elizabeth Warren is positioned to take the Senate Banking Committee gavel in January 2027, after her party won back majorities in both chambers of Congress in the November 3 midterm elections. She currently serves as the panel’s ranking Democrat, and the chair would give her power to convene hearings, compel testimony and documents, issue subpoenas under committee procedure, and move bills quickly. The appointment is not yet final, but party control makes it the expected outcome.

Two targets dominate her early agenda. The first is prediction markets: her banking policy aide said the committee would work to end what the aide called a “Wild West” absence of oversight, naming insider trading and market manipulation on election and event contracts as the core worry. The same aide said executives at large technology firms, senior Trump administration officials, people tied to the Trump family’s crypto ventures, and major financial institutions should preserve records and prepare for hard questions. Reuters reported that Warren may also examine the August bank-charter approval granted to World Liberty Financial, the venture linked to President Donald Trump. She has previously asked regulators to probe possible illicit-finance and national-security risks at the company, joined Senator Chris Murphy in a November 2025 letter over Middle East envoy Steve Witkoff’s ties to the project, and pressed for an investigation into the Official Trump memecoin. None of these is a finding of wrongdoing.

The second constraint is structural. The Commodity Futures Trading Commission (CFTC) regulates futures trading and derivatives-based event contracts, and it answers to the Senate Agriculture Committee, while Banking oversees securities regulation and federal banking regulators. US oversight therefore splits across spot, derivatives, and OTC trading, and Warren cannot write prediction-market rules from the Banking chair. She can, however, expedite legislation such as the CLARITY Act, which stalled in the Senate in September amid disputes over ethics safeguards for Trump-linked crypto.

Two Federal Cases Drive the Push

Two federal enforcement actions give the incoming chair ready-made evidence for hearings. On August 28, the CFTC ordered White House teleprompter operator Gabriel Perez to return $107,539.02 in profits from bets placed with advance knowledge of presidential speeches, according to the agency’s enforcement order. Perez also paid a $65,000 civil penalty and accepted a three-year trading ban, and Kalshi cooperated with the investigation.

The Justice Department case reaches further. In April, prosecutors charged Army soldier Gannon Ken Van Dyke with allegedly using classified information about the operation to capture Nicolás Maduro to profit on Polymarket bets, a department statement shows. Prosecutors allege he made more than $400,000, and the charges have yet to be tested in court.

Scale is adding pressure as well. An October report by the Council on Foreign Relations found Americans had already wagered about $1.4 billion on the 2026 midterm elections and projected the total would exceed $2 billion by election day. The researchers recommended sharper insider-trading rules, disclosure of large positions, and tighter supervision of offshore exchanges.

Lawmakers had already acted on those concerns. On October 28, Warren and Republican Senator John Curtis sent letters to the chief executives of Kalshi and Polymarket asking what safeguards prevent candidates and campaign staff from trading on material nonpublic information. Earlier, on March 29, Warren joined more than 40 senators in urging the CFTC and the Office of Government Ethics to remind federal employees of existing rules against betting on nonpublic government information. October trading showed why the stakes keep rising: notional volume across prediction markets reached $123.6 billion, against $22.7 billion actually paid for contracts, market data shows. Notional volume measures activity, not deposits or losses.

For platforms and market participants, the gavel changes the temperature more than the rulebook. The CFTC order and the DOJ charge show regulators can already punish insider trading case by case, yet both were narrow actions rather than market-wide rules, and any structural fix must run through legislation. The CLARITY Act is the hinge: a Warren chairmanship could revive the bill on different terms, or harden Democratic demands enough to keep it stalled. The nearer risk for Kalshi, Polymarket and offshore venues alike is political, since hearings and document demands raise compliance costs, the very concern behind the researchers’ call for tighter control of offshore exchanges.