Henry Billings Brown,
Austin v. Tennessee — Opinion of the Court
“ If Congress have power to declare what property may and what may not be brought into one state from another state, then the action of a state by which certain articles, not unreasonably deemed injurious to health, were excluded from its markets, should stand until Congress legislated upon the subject. If Congress possesses no such power, it is because the framers of the Constitution never intended that the mere grant of power to regulate commerce should override the power reserved by the states to pass laws that had substantial relations to the health of their people. ”
