Question: Cooley v. Board of Wardens and Kent v. Dulles are both what?
Sentence (from "Cooley v. Board of Wardens"): "It is the opinion of a majority of the court that the mere grant to Congress of the power to regulate commerce, did not deprive the States of power to regulate pilots, and that although Congress had legislated on this subject, its legislation manifests an intention, with a single exception, not to regulate this subject, but to leave its regulation to the several states," wrote Justice Curtis for the majority.
Relevant evidence: No