Illinois constitution
Article XIII
Section 2

All candidates for or holders of state offices and all members of a Commission or Board created by this Constitution
shall file a verified statement of their economic interests, as provided by law. The General Assembly by law may impose a similar requirement upon candidates for, or holders of, offices in units of local government and school districts. Statements shall be filed annually with the Secretary of State and shall be available for inspection by the public. The General Assembly by law shall prescribe a reasonable time for filing the statement. Failure to file a statement within the time prescribed shall result in ineligibility for, or forfeiture of, office. This Section shall not be construed as limiting the authority of any branch of government to establish and enforce ethical standards for that branch.