The 2025 Assembly Joint Resolution 121 proposes an amendment to the Wisconsin Constitution that clarifies the custody of county jails and their inmates. It establishes that the county sheriff has the inherent authority to maintain custody of the county jail and its inmates, as affirmed by previous Wisconsin Supreme Court rulings. However, the amendment also allows for the county board of supervisors to delegate this authority to another public officer or entity if they choose to do so.

To become effective, this proposed constitutional amendment must be adopted by two successive legislatures and subsequently ratified by the public. The resolution outlines the specific language to be added to Article VI of the Wisconsin Constitution and mandates that the amendment be published for three months prior to the next general election, where it will be presented to voters for approval.