James Clark McReynolds,
Knickerbocker Ice Company v. Stewart…
“ The Constitution itself adopted and established, as part of the laws of the United States, approved rules of the general maritime law and empowered Congress to legislate in respect of them and other matters within the admiralty and maritime jurisdiction. Moreover, it took from the states all power, by legislation or judicial decision, to contravene the essential purposes of, or to work material injury to, characteristic features of such law or to interfere with its proper harmony and uniformity in its international and interstate relations. ”
