Information should not be disseminated about opportunities for, and there should be no participation or other assistance by any officer or employee of the Department of State (including the Agency for International Development) in, the negotiation of any contract or arrangement with a foreign country, individual, or entity, if—
((1)) any United States person (as defined in ) is prohibited from entering into such contract or arrangement, or
((2)) such contract or arrangement requires that any such person be excluded from participating in the implementation of such contract or arrangement,