Twenty-First Amendment, Section 1:
The eighteenth article of amendment to the Constitution of the United States is hereby repealed.
The Twenty-first Amendment did not repeal the Export-Import Clause, Art. I, § 10, cl. 2, nor obliterate the Commerce Clause, Art. I, § 8, cl. 3. Accordingly, a state cannot tax imported liquor while it remains
in unbroken packages in the hands of the original importer and prior to [his] resale or use thereof. 1 Likewise, New York is precluded from terminating the business of an airport dealer who, under sanction of federal customs laws, acquired
tax-free liquors for export from out-of-state sources for resale exclusively to airline passengers, with delivery deferred until the latter arrive at foreign destinations. 2
The Commerce Clause operates with full force whenever one State attempts to regulate the transportation and sale of alcoholic beverages destined for distribution and consumption in a foreign country . . . or another State. 3