Kalshi, a leading prediction market platform, is facing criminal gambling charges in Arizona as its monthly revenue from trading activity exceeds $110 million. State authorities allege that Kalshi offered unlicensed betting on sports and elections, a move that has placed the company under intense regulatory scrutiny. The charges come amid a broader debate over the legality of prediction markets and sports wagering in the U.S. Kalshi's rapid growth has been driven by sports event contracts, which accounted for nearly all of its platform fee income. The platform's user base expanded significantly, with monthly active users increasing from 600,000 to 5.1 million within a year. Despite the legal challenges, Kalshi argues that its contracts are financial instruments regulated at the federal level, while state officials contend they resemble conventional betting. The legal battle has expanded across multiple states, with Arizona prosecutors claiming Kalshi violated gambling laws by allowing bets on elections and sports outcomes. The company has faced mixed rulings in various courts, highlighting the ongoing uncertainty surrounding the regulation of prediction markets. Meanwhile, federal regulators are considering new rules for the industry, with the Commodity Futures Trading Commission set to review public comments before drafting policy guidance.