Authority of executive director - enforcement
(1) (a) It is the duty of the executive director of the department of revenue to see that all of the provisions of this part 1 are enforced and obeyed, and that all violations thereof are promptly prosecuted, and that all taxes and penalties are collected. To that end, the executive director has the power to make and adopt such rules and regulations relating to the administration and enforcement of the provisions of this part 1 as may be deemed proper and rules and regulations to govern his proceedings and to regulate the mode and manner of all investigations and hearings and to alter and amend the same.