On ImpeachmentOn Impeachment is a short, accessible collection of key historic writings about presidential impeachment, offered as part of a new Penguin Classics series on liberty and constitutional rights. A Penguin Classic On Impeachment is part of the Penguin Liberty series by Penguin Classics, which invites readers to explore the U. S. Constitution's text and values. Alongside American history and the insights of some of the country's most influential thinkers,