House Bill No. 2673 amends the Oklahoma Museum of Popular Culture Supplemental Revolving Fund, which is established within the State Treasury for the Oklahoma Historical Society. The bill specifies that the fund will continue to receive all appropriated monies from the Legislature and will be used for various expenditures related to the museum, including repairs, planning, and construction. A key modification in the bill is the requirement that no expenditures can be made from the fund until the State Treasurer confirms that a total of $18 million has been secured through local and county government contributions, federal funds, or enforceable monetary pledges.

Additionally, the bill removes the previous cutoff date of May 25, 2023, for counting funds towards the $18 million requirement and replaces it with May 25, 2021. This change allows for a broader range of contributions to be considered. If the State Treasurer does not authorize expenditures from the fund by November 15, 2025, any unencumbered funds will be transferred to the General Revenue Fund for the fiscal year ending June 30, 2024.