BOISE, Idaho (AP) — A simple rule change unraveled a legislative committee as Idaho lawmakers expressed dismay over the state's increasingly controversial slot-like machines —known as instant horse racing terminals.

During Thursday's House State Affairs Committee meeting, members held off approving a new rule seeking to slow the proliferation of instant racing machines in Idaho.

Republican Rep. Vito Barbieri of Dalton Gardens says they need more time to research the issue. He added he's concerned that the law passed is legal but the machines may be unconstitutional.

Instant horse racing terminals resemble slot machines, which are illegal in Idaho. Bettors wage on past races but any identifiable information is unknown.

Coeur d'Alene Tribe lobbyist Bill Roden says he will introduce legislation Friday that would repeal the statute that permits the machines.