Hugo Black,
United States v. Frankfort Distilleries…
“ Of course, if a State chooses not to exercise the power given it by the Twenty-first Amendment and to continue to treat intoxicating liquors like other articles, the operation of the Commerce Clause continues. Since the Commerce Clause is subordinate to the exercise of state power under the Twenty-first Amendment, the Sherman Law, deriving its authority from the Commerce Clause, can have no greater potency than the Commerce Clause itself. It must equally yield to state power drawn from the Twenty-first Amendment. ”
