Lobbying dollars and campaign contributions from the gaming industry have been part of Pennsylvania politics for decades, but an ongoing fight over skill games is prompting some lawmakers to return money.

In the last week, the most powerful senators in the Pennsylvania General Assembly returned tens of thousands of dollars from the skill games industry, with some saying the games are unregulated, “illegal gambling” that is costing the state hundreds of millions of dollars each year.

The Senate Community, Economic & Recreational Development Committee will meet at 11 a.m. Monday for a public hearing on the future of gaming in Pennsylvania, and skill games are expected to be a focal point.