Pub. L. 84-196, tit. III, sec. 306
RIGHTS OF THIRD COUNTRIES.
SEC. 306. RIGHTS OF THIRD COUNTRIES.The benefits granted by this Act, and by the revised agreement, to the Republic of the Philippines, Philippine articles or products, and Philippine citizens, shall not, by reason of any provision of any treaty or agreement existing on the date of the enactment of this Act with any third country, be extended to such country or its products, citizens, or subjects.