Note 364 — Chapter V · The Power of the States to Interfere with the Mails

163 U. S. 299 (1896). “... legislative enactments of the states passed under their admitted police power, and having a real relation to the domestic peace, order, health and safety of their people, but which, by their necessary operation, affect to some extent, or for a limited time, the conduct of commerce among the states, are yet not invalid by force alone of the grant of power to Congress to regulate such commerce, if not obnoxious to some other constitutional provision or destructive of some right secured by fundamental law....”