This British magazine cartoon from the 19th Century is titled "The Bosses of the Senate." The little midgets in the foreground are U.S. Senators of that day, and behind them, with the enormous appetites, are the corporations of that day, labeled variously "Steel Beam Trust," "Copper Trust," "Nail Trust," "Standard Oil," "Iron," "Sugar," Tin," "Coal," etc cetera.
This came to me in an e-mail with the subject line filled in: "Nothing has changed since this was published."
Except, maybe it's worse. Corporations can now openly and legally buy any elected official they please.