Pub. L. 86-704, tit. I, sec. 110

Sec. 110. None of the funds provided in this title shall be available for assistance to any country, the government of which sells arms, ammunition, or implements of war to the Castro regime, or which furnishes, by grant or loan, any military or economic aid to that regime, unless the President determines that the withholding of such assistance to such country would be contrary to the national interest.