505 ILCS 30/14.2
The Department may suspend or revoke any registration issued under Section 4 of this Act for violation of the Act or any rules adopted pursuant thereto.
The Department may, upon its own motion and shall upon the verified complaint in writing of any person setting forth facts which, if proved, would constitute grounds for refusal, suspension, or revocation of a product registration, under this Act, investigate the actions of any applicant or any person or persons applying for, holding, or claiming to hold a product registration or firm license.
At least 10 days before the date set for the hearing, the Director shall notify in writing the applicant for or holder of a product registration or firm license, referred to as the respondent in this Section, that a hearing will be held on the date designated to determine whether the respondent is entitled to hold a product registration or firm license and shall afford the respondent opportunity to be heard in person or by counsel.
The Department, over the signature of the Director, is authorized to issue subpoenas and to take testimony, either orally, by disposition or by exhibit, in the circuit courts of this State. The Director is authorized to issue subpoenas duces tecum for any or all records relating to the feed in question.
505 ILCS 30/14.2