Richard Nixon actually said...
The designation of the Customs Cooperation Council as a public international organization within the meaning of the International Organizations Immunities Act shall not be deemed to abridge in any respect privileges, exemptions, and immunities which the organization may have acquired or may acquire by treaty or Congressional action.
Context
Executive Order 11596—Designating the Customs Cooperation Council as a Public International Organization Entitled to Enjoy...
06/04/1971