; (2) to encourage and, in specified cases, require United States persons engaged in the export of goods or technology or other information to refuse to take actions, including furnishing information or entering into or implementing agreements, which have the effect of furthering or supporting the restrictive trade practices or boycotts fostered or imposed by any foreign country, or requests to impose restrictive trade practices or boycotts by any foreign country against a country friendly to the United States or against any United States person