Top lawmakers in the Pennsylvania Senate have released a memo calling for the regulation and taxation of so-called skill games, signaling that the issue will be high on the agenda for the second session in a row.

Skill games are the tens of thousands of slot-like machines that have proliferated in Pennsylvania bars, restaurants, and convenience stores in recent years. They are currently unregulated — and untaxed — and many lawmakers believe the state should change that.

However, the issue is convoluted, heavily lobbied, and defies party and ideology. It has festered in the halls of the Capitol for almost a decade.