15 ILCS 510/9b
For positions in the Office of the Treasurer with respect to selection and tenure on a basis of merit and fitness, those matters specified in Sections 9b.1 through 9b.13.
The Division may, at its discretion, accept the results of examinations conducted by any merit system established by federal law or by the law of any state, and may compile lists of eligible candidates therefrom or may add the names of successful candidates in examinations conducted by those merit systems to existing lists of eligible candidates. No person who is a nonresident of the State of Illinois may be appointed from those eligible lists unless the requirement that the applicants be residents of the State of Illinois is waived by the Treasurer. Special linguistic requirements may also be established where deemed appropriate.
15 ILCS 510/9b