Morrison Waite,
Bridge Company v. United States…
“ But the power of Congress in respect to legislation for the preservation of inter-state commerce is just as free from State interference as any other subject within the sphere of its legislative authority. The action of Congress is supreme, and overrides all that the States may do. When, therefore, Congress in a proper way declares a bridge across a navigable river of the United States to be an unlawful structure, no legislation of a State can make it lawful. Those who act on State authority alone necessarily assume all the risks of legitimate congressional interference. ”
