Upper Lakes Shipping, Ltd. v. Seafarers' International Union

A preliminary issue presented on this appeal is raised by appellant’s contention that under the doctrine of federal pre-emption, the National Labor Relations Act renders invalid a temporary injunction issued by a Wisconsin court against picketing of foreign ships operated by foreign seamen.

In Upper Lakes Shipping, Ltd., v. Seafarers’ International Union, supra, we held that the provisions of the National Labor Relations Act were not applicable to a dispute in which one party was a foreign shipping corporation, flying a foreign flag on its vessels,., and employing crews composed entirely of…