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 fund is designed to be a continuous source of financing for various expenditures related to the museum, including repairs, planning, staging, refurbishments, 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 local and county governments, the federal government, or enforceable monetary pledges have contributed a total of $18 million for these purposes. Additionally, the bill specifies that funds collected prior to May 25, 2021, will not count towards this total.

The bill also includes a provision that mandates the transfer of any unencumbered funds remaining in the Oklahoma Museum of Popular Culture Supplemental Revolving Fund to the General Revenue Fund of the State Treasury if the State Treasurer does not authorize expenditures from the fund by November 15, 2025. This ensures that funds are utilized effectively and that there is a timeline for action regarding the fund's expenditures.