What doctrine maintains provides that if a subject of interstate commerce is national in character, then regulation of that subject is exclusively federal?

Question

Quizplus · Accepted Answer

The Cooley Doctrine, derived from the Supreme Court case Cooley v. Board of Wardens, posits that when a subject of interstate commerce requires uniform regulation due to its national character, the regulatory authority belongs exclusively to the federal government. This doctrine distinguishes between matters that need national uniformity (federally regulated) and those that can be varied locally (where states might regulate).

What Doctrine Maintains Provides That If a Subject of Interstate