The director of revenue or a department employee designated by the director shall sign on behalf of the department all orders, subpoenas, warrants, and other documents of like character issued by the department.
Iowa Code § 421.9
86 Acts, ch 1245, §421; 90 Acts, ch 1232, §3; 94 Acts, ch 1165, §3; 2003 Acts, ch 145, § 286; 2007 Acts, ch 126, §64; 2022 Acts, ch 1061, §61