In the Pipe Line Cases, decided in 1914,[388] the Court affirmed the power of Congress to regulate the transportation of oil and gas in pipe lines from one State to another and held that this power applies to such transportation even though the oil (or gas) in question was the property of the owner of the lines.[389] Thirteen years later, in 1927, the Court ruled that an order by a State commission fixing rates on electric current generated within the State and sold to a distributor in another State was invalid as imposing a burden on interstate commerce, thus holding impliedly that Congress' power to regulate the transmission of electric current from one State to another carried with it the power to regulate the price of such electricity.[390] Proceeding on this implication Congress, in the Federal Power Act of 1935,[391] conferred upon the Federal Power Commission the power to govern the wholesale distribution of electricity in interstate commerce; and three years later vested in the same body like power over natural gas moving in interstate commerce.[392] In Federal Power Commission _v._ Natural Gas Pipeline Company,[393] the power of the Commission to set the prices at which gas, originating in one State and transported into another, should be sold to distributors wholesale in the latter State, was sustained by the Court in the following terms: "The argument that the provisions of the statute applied in this case are unconstitutional on their face is without merit. The sale of natural gas originating in the State and its transportation and delivery to distributors in any other State constitutes interstate commerce, which is subject to regulation by Congress. * * * It is no objection to the exercise of the power of Congress that it is attended by the same incidents which attend the exercise of the police power of a State. The authority of Congress to regulate the prices of commodities in interstate commerce is at least as great under the Fifth Amendment as is that of the States under the Fourteenth to regulate the prices of commodities in intrastate commerce."[394] Other acts regulative of interstate commerce and communication which belong to this period are the Federal Communications Act of 1934, which regulates, through the Federal Communications Commission,[395] "interstate and foreign communication by wire and radio"; the Federal Motor Carrier Act of 1935, which, through the Interstate Commerce Commission, governs the transportation of persons and property by motor vehicle common carriers;[396] the Civil Aeronautics Act of 1938, enacted for the purpose of bringing under the control of a central agency, called "the Civil Aeronautics Authority" (functioning through the Civil Aeronautics Administrator and the Civil Aeronautics Board) all phases of airborne commerce, foreign and interstate.[397] None of these measures have provoked challenge to the power of Congress to enact them.