Kalshi is increasingly under legal scrutiny across the United States, with Washington joining states like Nevada and Arizona in challenging its business model. Nevada has already issued a temporary restraining order blocking operations, while Arizona has taken a more aggressive approach by filing criminal charges related to unlicensed gambling.

These cases highlight a broader regulatory clash over whether prediction markets fall under financial regulation or gambling laws. As lawmakers also raise concerns about sensitive betting markets—such as wagers tied to military actions—the outcome of these legal battles could significantly shape the future of prediction platforms in the US.