Horace Gray, Van Brocklin v. Anderson — Opinion of the Court
“ The sovereignty of a state extends to everything which exists by its own authority, or is introduced by its permission; but does not extend to those means which are employed by congress to carry into execution powers conferred on that body by the people of the United States. The attempt to use the taxing power of a state on the means employed by the government of the Union, in pursuance of the constitution, is itself an abuse, because it is the usurpation of a power which the people of a single state cannot give. ”
