The impeachment trial was a painful trip to a low, ugly corner of the American psyche. Republicans over the past few generations have spoken a great deal about fealty to the original intent of the nation’s Framers: They were a pretty contentious lot, as any “Hamilton” fan could tell you. But one would search the Federalist Papers in vain for any words in favor of a president whipping up a mob to storm Congress. Donald Trump took an oath — its words written right into the Constitution — to preserve, protect and defend a system of government that serves all the people in our quest for a more perfect union. He failed to uphold that oath. The burden of proof was met.