In meeting the strain which World War I put on our national resources of men and material, the economic activities of the people were directed or restricted by the Government on a scale previously unparalleled. The most sweeping measure of control was the Lever Food and Fuel Control Act,[1259] which authorized the President to regulate by license the importation, manufacture, storage, mining or distribution of necessaries; to requisition foods, feeds, and fuels; to take over and operate factories, packinghouses, pipelines, mines or other plants; to fix a minimum price for wheat; to limit, regulate or prohibit the use of food materials in the production of alcoholic beverages; and to fix the price of coal and coke and to regulate the production, sale and distribution thereof. Other statutes clothed him with power to determine priority in car service,[1260] to license trade with the enemy and his allies,[1261] and to take over and operate the rail and water transportation system,[1262] and the telephonic and telegraphic communication systems,[1263] of the country.
Several of these World War I measures were still on the statute books when World War II broke out. Moreover, in the period of preparation preceding the latter, Congress had enacted the Priorities Act of May 31, 1941[1264] which gave the President power to allocate any material where necessary to facilitate the defense effort. By the Second War Powers Act,[1265] passed early in 1942, the authority to allocate materials was extended to facilities. These two acts furnished the statutory foundation for the extensive system of consumer rationing administered by the Office of Price Administration, as well as for the comprehensive control of industrial materials and output which was exercised by the War Production Board. Under the Emergency Price Control Act[1266] the Office of Price Administration regulated the price of almost all commodities, as well as the rentals for housing accommodations in scores of defense rental areas. The War Labor Disputes Act[1267] permitted the President to commandeer plants which were closed by strikes.
While the validity of several of the measures just reviewed was assailed on one constitutional ground or another, the general power of Congress to regulate their subject matter in time of war was not disputed. Not until the Government sought to recover excessive profits realized on war contracts did the Supreme Court have occasion to affirm the broad authority of the National Government to mobilize the industrial resources of the nation in time of war. Using the power of Congress to conscript men for the armed forces as a measure of its power to regulate industry, the Court sustained the legislation, saying: "The Renegotiation Act was developed as a major wartime policy of Congress comparable to that of the Selective Service Act. The authority of Congress to authorize each of them sprang from its war powers. * * * With the advent of * * * [global] warfare, mobilized property in the form of equipment and supplies became as essential as mobilized manpower. Mobilization of effort extended not only to the uniformed armed services but to the entire population. Both Acts were a form of mobilization. The language of the Constitution authorizing such measures is broad rather than restrictive. * * * [It] * * * places emphasis upon the supporting as well as upon the raising of armies. The power of Congress as to both is inescapably express, not merely implied."[1268]