65 ILCS 5/10-2.1-3
The members of the board shall be considered officers of the municipality, and shall file an oath and a fidelity bond in such amount as may be required by the governing body of the municipality.
No person holding an office under a municipality, shall be a member of the board of fire and police commissioners or the Secretary thereof. The acceptance of any such office by a member of the board shall be treated as a resignation of his office as a member of the board or the Secretary thereof. No person shall be appointed a member of the board of fire and police commissioners who has been convicted of a felony under the laws of this State or comparable laws of any other state or the United States. No person shall be appointed a member of the board of fire and police commissioners who is related, either by blood or marriage up to the degree of first cousin, to any elected official of such municipality. No more than 2 members of the board shall belong to the same political party existing in such municipality at the time of such appointments and as defined in Section 10-2 of The Election Code. If only one or no political party exists in such municipality at the time of such appointments, then state or national political party affiliations shall be considered in making such appointments. Party affiliation shall be determined by affidavit of the person appointed as a member of the board.
Members shall not be subject to removal, except for cause, upon written charges, and after an opportunity to be heard within 30 days in his or their own defense, before a regular meeting of the governing body of the municipality for which they have been appointed. A majority vote of the elected members of such governing body shall be required to remove any such member from office.
65 ILCS 5/10-2.1-3