Assembly Bill 1237 aims to restore the authority of private individuals to bring qui tam claims against those making false claims for medical assistance, a provision that was removed by the 2015 Wisconsin Act 55. The bill reinstates previous language allowing individuals to receive up to 30% of the recovered amount from such claims, along with reasonable expenses and attorney fees. Additionally, the bill aligns state law with the federal False Claims Act by expanding provisions for qui tam actions and modifying liability standards. It also grants the Department of Justice the authority to pursue claims independently, with penalties and definitions mirroring those in the federal law.

The bill introduces new sections to the statutes, including definitions for terms such as "claim," "knowingly," and "material," which are essential for understanding the legal framework surrounding false claims for medical assistance. It outlines the process for individuals to file qui tam actions, the state's rights to intervene, and the distribution of proceeds from successful claims. The legislation emphasizes the importance of cooperation with investigations and sets forth conditions under which penalties may be reduced or dismissed, particularly if the individual bringing the action is found to have initiated the violation. Overall, the bill seeks to enhance accountability in the Medical Assistance program while providing a mechanism for private individuals to contribute to enforcement efforts.