Chicago is the home of the Chicago commodities exchange... and like New York has a bit of influence over businesses dealing with banking taking place in New York, so too does Illinois have influence over the regulations around the question of commodities and related markets.

https://nationaltoday.com/us/il/chicago/news/2026/02/24/cme-...

https://businesslawreview.uchicago.edu/online-archive/commod...

Another bit is things like sports betting laws... and how they interact with prediction markets.

https://capitolnewsillinois.com/news/sports-betting-tax-beco...

https://capitolnewsillinois.com/news/illinois-regulators-say...

Furthermore a fair number of the largest crypto trading firms (DRW, Jump, Wolverine) are HQ’d in Chicago.