The proposal was spearheaded by Ohio Attorney General Andy Wilson. In a letter to the CFTC, the attorneys general argue that the federal regulator is exceeding its authority. They stress that the agency is attempting to control gambling, which has traditionally been regulated at the state level. The attorneys general are calling on the CFTC to develop new rules in line with the Commodity Exchange Act and the Constitution. Earlier, CFTC Chair Michael Selig said they would sue any state that challenges their exclusive right to regulate the prediction market.