25 ILCS 170/3.1

Notwithstanding any other law of this State, on and after February 1, 2004, but not before that date, a person required to be registered under this Act, his or her spouse, and his or her immediate family members living with that person may not serve on a board, commission, authority, or task force authorized or created by State law or by executive order of the Governor; except that this restriction does not apply to any of the following: (1) a registered lobbyist, his or her spouse, or any immediate family member living with the registered lobbyist, who is serving in an elective public office, whether elected or appointed to fill a vacancy; and (2) a registered lobbyist, his or her spouse, or any immediate family member living with the registered lobbyist, who is serving on a State advisory body that makes nonbinding recommendations to an agency of State government but does not make binding recommendations or determinations or take any other substantive action.