“ The authority and duties vested in me to prohibit certain imports as provided in section 81 (c) (1) (B) of the AECA and section 11C (c) (1) (B) of the EAA, pursuant to a determination made by the Secretary of State under section 81 (a) (1) of the AECA or section 11C (a) (1) of the EAA, and the obligation to implement the exceptions provided in section 81 (c) (2) of the AECA and section 11C (c) (2) of the EAA, insofar as the exceptions affect imports of goods into the United States, are delegated to the Secretary of the Treasury. (b) Chemical and Biological Weapons Use. ”