Benjamin Robbins Curtis, Cooley v. Port of Philadelphia…
“ If Congress were now to pass a law adopting the existing state laws, if enacted without authority, and in violation of the Constitution, it would seem to us to be a new and questionable mode of legislation.If the grant of commercial power in the Constitution has deprived the states of all power to legislate for the regulation of pilots, if their laws on this subject are mere usurpations upon the exclusive power of the general government, and utterly void, it may be doubted whether Congress could, with propriety, recognize them as laws, and adopt them as its own acts ”
