XX General Exceptions
  Allows a Contracting Party to adopt or enforce measures for a variety of purposes as long as the "measures are not applied in a manner which would constitute a means of arbitrary or unjustifiable discrimination" between trading partners or "a disguised restriction on international trade." The exceptions include measures:
  (a) "necessary to protect public morals;"
  (b) "necessary to protect human, animal or plant life or health;"
  (c) "relating to the importations or exportations of gold or silver;"
  (d) "necessary to secure compliance" with domestic "laws or regulations" pertaining to issues such as customs enforcement, sanctioned domestic monopolies and state enterprises, intellectual property rights, and fraud;
  (e) "relating to the products of prison labour;"
  (f) "imposed for the protection of national treasures of artistic, historic or archaeological value;"
  (g) "relating to the conservation of exhaustible natural resources if such measures are made effective in conjunction with restrictions on domestic production or consumption;"
  (h) relating to obligations under international commodity agreements;
  (i) "involving restrictions on exports" of price-controlled inputs, as long as the restrictions do not discriminate or increase the exports of industries which use the price-controlled inputs;
  (j) "essential" for items in "short supply," as long as the measures are temporary and "consistent with the principle that all contracting parties are entitled to an equitable share of the international supply of such products."