Joseph P. Bradley, Brown v. Houston — Opinion of the Court
“ It is a plain regulation of interstate commerce, a regulation extending to prohibition. Whatever may be the power of a state over commerce that is completely internal, it can no more prohibit or regulate that which is interstate than it can that which is with foreign nations.' In short, it may be laid down as the settled doctrine of this court, at this day, that a state can no more regulate or impede commerce among the several states than it can regulate or impede commerce with foreign nations. ”
