Crosby v. National Foreign Trade Council, 530 U.S. 363 (2000), was a unanimous case in which the Supreme Court of the United States used the federal preemption doctrine to strike down the Massachusetts Burma Law, a law that effectively prohibited Massachusetts' governmental agencies from buying goods and services from companies conducting business with Myanmar (Burma), essentially a secondary boycott. The Massachusetts Burma Law was modeled after similar legislation that had targeted the apartheid regime of South Africa.