An article that appeared in a recent issue of Harper's Magazine has set up a heated debate about the nature of lobbying work with foreign governments, as well as journalistic ethics and practices.

Called "Their Men in Washington: Undercover with DC's Lobbyists for Hire," the article recounts how Harper's Washington editor Ken Silverstein, calling himself Kenneth Case, posed as a consultant with a fictional London-based investment firm, The Maldon Group.

The story tells of how Case tricked two firms, APCO Worldwide ...