Minnesota Gov. Tim Walz has signed the nation's first law banning prediction market sites from operating in the state; the CFTC has sued Minnesota in response (Bobby Allyn/NPR)

Bobby Allyn / NPR: Minnesota Gov. Tim Walz has signed the nation's first law banning prediction market sites from operating in the state; the CFTC has sued Minnesota in response — Minnesota Gov. Tim Walz has signed the nation's first law banning prediction market sites from operating in the state …