Protectionist trade restrictions harm large segments of society for the benefit of a smaller segment. For example, every time the steel industry asks for tariffs on steel imports from foreign countries, someone correctly points out that if that wish were granted, it would harm the United States auto industry and other steel users, not to mention consumers. Protectionist trade restrictions serve particular interests and only rarely also the general welfare. But the U.S. Constitution requires the government to serve the general welfare. It follows that ____________.

Which of the following best completes the passage?