PANews reported on May 13 that, according to The Block, the U.S. Commodity Futures Trading Commission (CFTC) filed an amicus brief in Ohio's lawsuit against prediction market Kalshi, supporting Kalshi and arguing that the state overstepped its authority. CFTC Chairman Michael Selig stated that the Ohio federal district court's interpretation of the CFTC's jurisdiction was "too narrow" and that he is seeking correction from the appeals court. Previously, Ohio accused Kalshi of operating as an unlicensed sports betting platform; a federal judge rejected Kalshi's preliminary injunction application, ruling that Congress did not intend to "replace state sports betting laws."

In recent months, the CFTC has filed lawsuits against five states—Wisconsin, Illinois, Arizona, Connecticut, and New York—to establish its regulatory authority over prediction markets. Last month, New York Attorney General Letitia James, along with attorneys general from 37 other states, filed an amicus curiae in support of Massachusetts's lawsuit against Kalshi.