“ In any case in which the head of an executive agency proposing to purchase domestic materials determines that a greater differential than that provided in this order between the cost of such materials of domestic origin and materials of foreign origin is not unreasonable or that the purchase of materials of domestic origin is not inconsistent with the public interest, this order shall not apply. ”

“ To reject any bid or offer for materials of foreign origin if such rejection is necessary to protect essential national-security interests after receiving advice with respect thereto from the President or from any officer of the Government designated by the President to furnish such advice.
Sec. 4. The head of each executive agency shall issue such regulations as may be necessary to insure that procurement practices under his jurisdiction conform to the provisions of this order. ”

“ A written report of the facts of each case in which such a determination is made shall be submitted to the President through the Director of the Bureau of the Budget by the official making the determination within 30 days thereafter. ”