BRUCE ACKERMAN is one of America's leading political philosophers and constitutional lawyers.

An incisive legal argument that the attempt to impeach then-President Bill Clinton was not only ethically troubling, but actually against the basic legal procedures of the House and Senate and thus unconstitutional. A wake-up call, relevant even today, of the lengths to which the American right will go in order to bring down their rivals, even under the scrutinizing eyes of the world.