Semiquincentennial commission.

Changes the membership of the semiquincentennial commission (commission). Requires the department of natural resources to provide staff support to the commission beginning June 1, 2025. Designates Indiana's United States Senators as honorary co-chairpersons of the commission. Establishes the semiquincentennial advisory committee to advise the commission on carrying out the commission's duties. Repeals the statute specifying the duties of the commission under current law. Specifies that the commission's duties are to do the following: (1) Plan, develop, and conduct at least one event in each Indiana state park before June 30, 2027, in commemoration of the semiquincentennial. (2) Promote programs developed by state agencies, municipalities, school corporations, and Indiana's colleges and universities that commemorate the semiquincentennial. Makes conforming changes. Extends the commission law until July 1, 2027. Makes an appropriation.