CFTC Chair Michael Selig, the sole leader at the financial agency, has jumped into another legal battle over state-level actions against prediction markets by filing suit against Minnesota.

“This Minnesota law turns lawful operators and participants in prediction markets into felons overnight,” the CFTC chairman said.

Minnesota’s law could expose exchanges, payment providers, media partners, and sports leagues to criminal liability.

The federal regular is asking for an order that would stop the law from going into effect on Aug. 1, according to the complaint.