The Constitution is pretty fucking clear in how vague it is about impeachment. All it says in Article I is “The House of Representatives shall choose their speaker and other officers; and shall have the sole power of impeachment” and “The Senate shall have the sole power to try all impeachments” with more procedure following there. But that’s after impeachment in the House. In Article II, you get this: the president “shall have power to grant reprieves and pardons for offenses against the United States, except in cases of impeachment.” That’s interesting, no? Oh, and this: “The President…shall be removed from office on impeachment for, and conviction of, treason, bribery, or other high crimes and misdemeanors.” There’s also something about a jury not being required.