Congress' jurisdiction over navigable streams today 131 Purposes for which power may be generated 131 Congressional regulation of land transportation 132 Early Acts: Federal provision for highways 132 Beginnings of federal railway regulation 132 Regulation of rates: Interstate Commerce Commission 133 Interstate Commerce Commission today 135 Shreveport Case 135 Act of 1920 and State railway rate regulation 136 Regulation of other agents of carriage and communication 137 Acts of Congress protective of labor engaged in interstate transportation 139 Adair Case 141 Railroad Retirement Act 142 Bills of Lading: Ferger Case 143 Congressional regulation of commerce as traffic 144 Sherman Act: Sugar Trust Case 144 Sherman Act revised 146 "Current of commerce" concept: Swift Case 147 Danbury Hatters Case 149 Stockyards and Grain Futures Acts 149 Securities and Exchange Commission 150 Congressional regulation of production and industrial relations 152 Antidepression legislation 152 National Industrial Recovery Act 152 Schechter Case 152 Agricultural Adjustment Act 153 Bituminous Coal Conservation Act 153 National Labor Relations Act 154 Fair Labor Standards Act: Darby Case 155 Agricultural Marketing Agreement Act 159 Acts of Congress prohibiting commerce 160 Foreign commerce; Jefferson's embargo 160 Foreign commerce; protective tariffs 162 Foreign commerce; banned articles 162 Interstate commerce; conflict of doctrine and opinion 163 Acts of Congress prohibitive of commerce 168 Lottery Case 169 National prohibitions and State police power 169 Hammer _v._ Dagenhart 170 Interstate commerce in stolen goods banned 171 Darby Case 172