21 U.S.C. § 968 : US Code - Section 968: Service of subpena; proof of service

Search 21 U.S.C. § 968 : US Code - Section 968: Service of subpena; proof of service

A subpena of the Secretary of the Treasury may be served by any
person designated in the subpena to serve it. Service upon a
natural person may be made by personal delivery of the subpena to
him. Service may be made upon a domestic or foreign corporation or
upon a partnership or other unincorporated association which is
subject to suit under a common name, by delivering the subpena to
an officer, a managing or general agent, or to any other agent
authorized by appointment or by law to receive service of process.
The affidavit of the person serving the subpena entered on a true
copy thereof by the person serving it shall be proof of service.