55 ILCS 5/3-6023
Each sheriff shall, in person or by deputy, county corrections officer, or court security officer, attend upon all courts held in his or her county when in session, and obey the lawful orders and directions of the court, and shall maintain the security of the courthouse. Court services customarily performed by sheriffs shall be provided by the sheriff or his or her deputies, county corrections officers, or court security officers, rather than by employees of the court, unless there are no deputies, county corrections officers, or court security officers available to perform such services. The expenses of the sheriff in carrying out his or her duties under this Section, including the compensation of deputies, county corrections officers, or court security officers assigned to such services, shall be paid to the county from fees collected pursuant to court order for services of the sheriff and from any court services fees collected by the county under the Criminal and Traffic Assessment Act .
55 ILCS 5/3-6023