High Crimes and Misdemeanors: A History of Impeachment for the Age of Trump

"Frank examines the British practice in detail, because the American system, set forth in the Constitution, was modeled on that to a significant degree. Understanding those origins helps to explain the terms used in the Constitution that set forth the grounds for impeachment, conviction, and removal. Hoffer and Hull have written the best book on colonial impeachment (or impeachment-like) practices. These early practices in America provided models for the framers to consider and ultimately to use in fashioning the federal impeachment process."