Charles Evans Hughes, Simpson v. David C Shepard — Opinion of the Court
“ There is no room in our scheme of government for the assertion of state power in hostility to the authorized exercise of Federal power. The authority of Congress extends to every part of interstate commerce, and to every instrumentality or agency by which it is carried on; and the full control by Congress of the subjects committed to its regulation is not to be denied or thwarted by the commingling of interstate and intrastate operations. ”
