(c)
Preemption
The provisions of this section and the regulations issued pursuant thereto shall preempt any law, rule, or regulation of any of the several States or the District of Columbia, or any of the territories or possessions of the United States, or of any governmental subdivision thereof, which law, rule, or regulation pertains to participation in, compliance with, implementation of, or the furnishing of information regarding restrictive trade practices or boycotts fostered or imposed by foreign countries against other countries.