The internet genuinely involves interstate commerce, too. Should we establish a Department of the Internet? What is it about genuine involvement that justifies a continuing role for the government?
One more thing: how about just eliminating NASA? What good does it do human beings? And who gave the federal government the authority to explore space?
NASA is a fine tool for research and development of space, which is now part of our national defense strategy. It will benefit human beings, because humans benefit by the advancement of American interests, but that is not why we should or should not keep NASA.