The “extreme middle” is shaped like a cross. My engagement with the impeachment imbroglio playing out in the hallowed chamber of the US Senate has been mostly after the fact. I watch daily news reports of the congressional proceedings and read the analysis. I scratch my head and roll my eyes. Given the allegiance of the politicians to their parties, the end appears as predictable as the beginning. As a dilettante of American history, I’m aware of our country’s predilection toward binary fury in its politics. Partisan democracy draws its energy from the passion polarity generates. Still, I appreciated columnist…