Modifies provisions relating to the State Treasurer's ability to invest

HJR 159 is a proposed constitutional amendment that would allow Missouri's State Treasurer to invest state funds in municipal bonds with high credit ratings (among the top five long-term ratings) and other safe, sensible financial instruments. The amendment requires the Treasurer to follow a written investment policy with asset allocation limits, ensures all investments maintain high credit ratings, and restricts maturities (e.g., municipal bonds must mature within five years). It clarifies that the Treasurer's duties are limited to managing state and U.S. government funds, excluding unrelated responsibilities. This amendment must be approved by Missouri voters in a future election after passing the legislature.