Part 4: The Consequences of Late Impeachment This is the fourth and final part of a series on the 1876 impeachment trial of former Secretary of War William Belknap. In each part, I have examined a different category of argument made at that trial on the question whether the Senate has constitutional jurisdiction to try and convict a former officer. In Part 1, I summarized the arguments at the trial based on constitutional text. In Part 2, I turned to the arguments based on the English practice of impeachment prior to the drafting of the U.S. Constitution. In Part 3, I recounted the ...