Even with its 27 amendments, the US Constitution is only 7,591 words. I keep it beside me, and find in it — as Sir Walter Elliot found in the Baronetage — ‘occupation for an idle hour, and consolation in a distressed one’. The final part of Section 3 of Article 1 is relevant in this distressed week: ‘Judgment in Cases of Impeachment shall not extend further than to Removal from Office, and disqualification to hold and enjoy any Office of Honor, Trust or Profit under the United States.’