Several US senators have written a letter to the Commodity Futures Trading Commission (CFTC), inquiring about the agency’s “plans to crack down on prediction markets” that offer “contracts for individuals to bet on wildfires.”

“There’s also the heightened risk—according to state and local fire officials—that individuals could be tempted to commit arson in order to make sure their bets are successful,” the letter continues. “By offering contracts on fires, prediction market sites run the risk of encouraging people to influence fires that have already started, creating additional concerns around public safety and insider trading.”