Sometimes our media can be so incurious. After Jennifer Pierotti Lim spoke at the Democratic convention last month, the New York Times interviewed her, describing her only as "the founder of the volunteer group Republican Women for Hillary." Cosmo and the Huffington Post, to their credit, mentioned Lim's employer: the U.S. Chamber of Commerce. None of these publications, in their positive profiles of the Clinton backer, mentioned her occupation: Lobbyist. A lobbyist for the largest lobbying entity in the country gets on stage to praise a presidential candidate, and her job is basically omitted from descriptions of her. That seems...