((a)) ** Restrictions on shipment of goods; prosecution; conviction** No producer, manufacturer, or dealer shall ship or deliver for shipment in commerce any goods produced in an establishment situated in the United States in or about which within thirty days prior to the removal of such goods therefrom any oppressive child labor has been employed: , That any such shipment or delivery for shipment of such goods by a purchaser who acquired them in good faith in reliance on written assurance from the producer, manufacturer, or dealer that the goods were produced in compliance with the requirements of this section, and who acquired such goods for value without notice of any such violation, shall not be deemed prohibited by this subsection: , That a prosecution and conviction of a defendant for the shipment or delivery for shipment of any goods under the conditions herein prohibited shall be a bar to any further prosecution against the same defendant for shipments or deliveries for shipment of any such goods before the beginning of said prosecution.ProvidedAnd provided further

((b)) ** Investigations and inspections** The Secretary of Labor or any of his authorized representatives, shall make all investigations and inspections under with respect to the employment of minors, and, subject to the direction and control of the Attorney General, shall bring all actions under to enjoin any act or practice which is unlawful by reason of the existence of oppressive child labor, and shall administer all other provisions of this chapter relating to oppressive child labor.section 211(a) of this titlesection 217 of this title

((c)) ** Oppressive child labor** No employer shall employ any oppressive child labor in commerce or in the production of goods for commerce or in any enterprise engaged in commerce or in the production of goods for commerce.

((d)) ** Proof of age** In order to carry out the objectives of this section, the Secretary may by regulation require employers to obtain from any employee proof of age.