William O. Douglas

“ The Court reasons that if the man who is building or repairing an interstate highway is 'engaged in commerce', the one who carries cement and gravel to him from a nearby pit is 'engaged * * * in the production of goods for commerce'. Yet if that is true, how about the men who produce the tools for those who carry the cement and gravel or those who furnish the materials to make the tools used in producing the cement and gravel? Each would be essential to the highway worker 'engaged in commerce'. ”