The US government has initiated a lawsuit against the state of Illinois, aiming to halt what it describes as unlawful attempts to regulate the burgeoning prediction market industry. This legal action underscores a growing conflict between federal and state authorities over the oversight of online platforms that allow users to bet on events ranging from Oscar winners to military conflicts.
Federal Challenge to State Regulation
Filed in a Chicago federal court on Thursday, the complaint argues that Illinois' efforts to shut down designated contract markets regulated by the Commodity Futures Trading Commission (CFTC) infringe upon the federal government's exclusive authority to regulate national swaps markets. The lawsuit names Illinois gaming board officials, Governor JB Pritzker, and Attorney General Kwame Raoul as defendants, with none of their offices immediately responding to requests for comment.
Prediction Markets Under Scrutiny
Prediction markets, such as Kalshi and Polymarket, have surged in popularity by enabling users to trade on virtually any outcome. These platforms classify their offerings as "event derivatives," placing them under federal commodities law and CFTC oversight rather than state gaming regulations. This classification allows them to operate in all 50 states for users aged 18 and older, unlike traditional sportsbooks that are limited to states where sports betting is legalized.
Critics argue that these markets are essentially gambling under a different name, leading to increased scrutiny from states and Congress. Illinois introduced legislation earlier this year proposing some of the strictest guardrails in the country, including an effective ban on sports-related trades within the state, advertising clampdowns, age restrictions, and consumer protections.
Cease-and-Desist Letters and Legal Battles
The lawsuit cites cease-and-desist letters sent by the Illinois gaming board to Kalshi, Polymarket, and Crypto.com, alleging violations of state gambling laws through unlicensed sports wagering. According to the letters, it is unlawful to operate internet sites permitting games of chance or skill for money without an IGB-issued license. This marks the first time the CFTC has sued to block state gaming regulators from policing prediction market operators.
Political and Industry Ties
The legal battle occurs against a backdrop of shifting political stances. While the Biden administration has attempted to crack down on prediction markets, the Trump administration has adopted a less stringent approach, with which it has close connections. Donald Trump Jr., the former president's eldest son, is an investor and unpaid adviser to Polymarket, as well as a paid adviser to Kalshi. Additionally, Trump's social media company recently announced plans to launch its own prediction platform called Truth Predict.
Congressional and State Resistance
Resistance from states has intensified, with at least 20 federal lawsuits filed nationwide to curb prediction markets, debating whether they should be treated as federally regulated financial exchanges or gambling operations. In response, Congress is considering federal measures, including a bipartisan Senate bill introduced in March by Democratic Senator Adam Schiff and Republican Senator John Curtis. This bill aims to ban sports betting on federally regulated platforms and prohibit casino-style games, arguing that such markets violate state consumer protections and tribal sovereignty.
Schiff emphasized in a statement that the CFTC is "green-lighting these markets and even promoting their growth," asserting that sports prediction contracts are merely sports bets with a different name. The outcome of this lawsuit could set a significant precedent for the future regulation of prediction markets across the United States.



