Constitutional Law in 1917–1918. I: The Constitutional Decisions of the Supreme Court of the United States in the October Term, 19171

The federal Child Labor Law was declared unconstitutional in Hammer v. Dagenhart by a vote of five to four. It forbade the transportation in interstate or foreign commerce of the product of any mine or quarry “in which within thirty days prior to the time of the removal of such product therefrom children under the age of sixteen years have been employed or permitted to work,” with similar prohibitions covering the products of mills and factories in which children under fourteen were employed or children under sixteen were employed more than eight hours a day. The majority opinion misinterpreted the statute and assumed that it permitted goods “to be freely shipped after thirty days from the time of their removal from the factory,” whereas it permitted only the shipment of stock on hand thirty days after children had ceased to be employed. The law was so framed as to avoid the necessity of proof that children coöperated in the making of specific articles produced in a factory in which children were employed, and yet to remove any ban on shipment from an establishment which for thirty days had employed only adult labor.