105 ILCS 5/1H-85
The obligations issued under the provisions of this Article are hereby made securities in which all public officers and bodies of this State, all political subdivisions of this State, all persons carrying on an insurance business, all banks, bankers, trust companies, savings banks, and savings associations (including savings and loan associations, building and loan associations, investment companies, and other persons carrying on a banking business), and all credit unions, pension funds, administrators, and guardians who are or may be authorized to invest in bonds or in other obligations of the State may properly and legally invest funds, including capital, in their control or belonging to them. The obligations are also hereby made securities that may be deposited with and may be received by all public officers and bodies of the State, all political subdivisions of the State, and public corporations for any purpose for which the deposit of bonds or other obligations of the State is authorized.
105 ILCS 5/1H-85