of the commerce clause in Gibbons _v._ Ogden.[462] Objections purporting to be based on the Tenth Amendment are met from the same point of view: "Our conclusion is unaffected by the Tenth Amendment which provides: 'The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.' The amendment states but a truism that all is retained which has not been surrendered. There is nothing in the history of its adoption to suggest that it was more than declaratory of the relationship between the national and State governments as it had been established by the Constitution before the amendment or that its purpose was other than to allay fears that the new National Government might seek to exercise powers not granted, and that the States might not be able to exercise fully their reserved powers. _See_ e.g., II Elliot's Debates, 123, 131; III id. 450, 464, 600; IV id. 140, 149; I Annals of Congress, 432, 761, 767-768; Story, Commentaries on the Constitution, Sec. 1907-1908."[463] Commenting recently on this decision, former Justice Roberts said: "Of course, the effect of sustaining the Fair Labor Standards Act was to place the whole matter of wages and hours of persons employed throughout the United States, with slight exceptions, under a single federal regulatory scheme and in this way completely to supersede state exercise of the police power in this field."[464] In a series of later cases construing terms of the act, it had been given wide application.[465] THE AGRICULTURAL MARKETING AGREEMENT ACT