Portal:Supreme Court of the United States, Brushaber v. Union Pacific Railroad Company…
“ It is true that it is elaborately insisted that although there be no express constitutional provision prohibiting it, the progressive feature of the tax causes it to transcend the conception of all taxation and to be a mere arbitrary abuse of power which must be treated as wanting in due process. But the proposition disregards the fact that in the very early history of the government a progressive tax was imposed by Congress, and that such authority was exerted in some, if not all, of the various income taxes enacted prior to 1894 to which we have previously adverted. ”
