510 ILCS 35/18
The Department is charged with the administration and enforcement of this Act, and may adopt reasonable rules and regulations therefor. No rule or regulation adopted or issued by the Department, under this Act, shall be effective on and after January 1, 1946, unless such rule or regulation has been submitted to the Advisory Board of Livestock Commissioners for approval. To effect the purposes of this Act, the Department shall cooperate with the Department of Agriculture of the United States.
The Department or its duly authorized agent, in performing the duties vested in it under this Act, is empowered to enter during usual working hours upon any premises, barns, stables, sheds or other places where such cattle, bison, sheep, goats, antelope, or cervids are housed or kept.
Sheriffs, prosecuting attorneys and their deputies shall, in their respective jurisdiction, render all necessary assistance to enable the Department or its duly authorized agent to enforce this Act.
510 ILCS 35/18