15 U.S.C. § 2101: Marking requirements

The manufacture in the United States, or the importation into the United States, for introduction into or distribution in commerce of any imitation political item which is not plainly and permanently marked with the calendar year in which such item was manufactured, is unlawful and is an unfair or deceptive act or practice in commerce under the Federal Trade Commission Act [ 15 U.S.C. 41 et seq.]. The manufacture in the United States, or the importation into the United States, for introduction into or distribution in commerce, or the sale in commerce of any imitation numismatic item which is not plainly and permanently marked “copy”, is unlawful and is an unfair or deceptive act or practice in commerce under the Federal Trade Commission Act [ 15 U.S.C. 41 et seq.]. The Federal Trade Commission shall prescribe rules for determining the manner and form in which items described in subsection (a) or (b) shall be permanently marked. It shall be a violation of subsection (a) or (b) for a person to provide substantial assistance or support to any manufacturer, importer, or seller if that person knows or should have known that the manufacturer, importer, or seller is engaged in any act or practice that violates subsection (a) or (b). Subsections (a) 1 (b), and (d), and regulations under subsection (c), shall not apply to any common carrier or contract carrier or freight forwarder with respect to an imitation political item or imitation numismatic item received, shipped, delivered, or handled by it for shipment in the ordinary course of its business. 1 So in original. Probably should be followed by a comma.