To prohibit the designation as a beneficiary developing country under the Generalized System of Preference any country that engages in certain actions regarding nuclear weapons, nuclear weapon components and nuclear weapon design information.

Amends the Trade Act of 1974 to prohibit the designation of a country as a beneficiary developing country eligible for trade benefits under the Generalized System of Preferences if: (1) it transfers to a non-nuclear-weapon state certain nuclear devices and information for use in the development of a nuclear device; or (2) (as a non-nuclear-weapon state itself) it receives or explodes a nuclear device, or seeks nuclear weapons information for use in the development of a nuclear device. Makes intent by the state in question to develop a nuclear explosive device an essential element in any determination to apply such prohibition.