(1) An insurer may invest in bonds or other evidences of indebtedness which are general obligations of, or are secured by pledge of specific revenue by, this state or any other state of the United States, or any of the counties or incorporated cities or towns, or duly organized school districts or other taxing districts of such states.
(2) No security shall be eligible for investment if within five (5) years next preceding the date of the proposed investment, the obligor has defaulted in the payment of principal or interest on any of its tax-supported obligations.