Article 20

The Agreement shall not preclude prohibitions or restrictions on imports, exports or goods in transit justified on grounds of public morality, law and order or public security, the protection of life and health of humans, animals or plants, the protection of national treasures of artistic, historic or archaeological value, the protection of industrial and commercial property, or rules relating to gold or silver. Such prohibitions or restrictions must not, however, constitute a means of arbitrary discrimination or a disguised restriction on trade between the Contracting Parties.