The revolving door between "public service" and lobbying is one of the problems Congress has refused to deal with, even during this time when some new revelation about corruption in Washington is revealed nearly every day.
An article in today's Washington Post examines one such incident. A lobbyist leaves his company to work for the powerful House Appropriations Committee. The lobbying company gives him $2 million in severance pay. Naturally, the company deals with the Appropriations Committee on a regular basis.
Perhaps this is legal, if you go by the letter of the law, but that certainly doesn't make it ethical.
On the same topic, an editorial in today's New York Times calls for lobbying reform.