During the impeachment trial of blessed memory, I had a brief conversation with Sen. Barbara Boxer. “My duty is to the Constitution,” she said gravely. “My duty is to preserve our two-party democratic system. It’s up to the Democrats to save the Republican party from itself.” Warming to her theme, the petite brunette liberal extremist noted the latest Republican poll numbers — down somewhere between Robert Mugabe and the Ebola virus — and explained, “That’s not good for our democracy. This is a tragedy for the Republicans. The GOP has become the Get Our President party. That’s not the Republican...