Just when you thought  the House Democrats’ slap stick impeachment show couldn’t sink any further into low comedy, along comes Speaker Nancy Pelosi’s threat to embargo the articles of impeachment unless the Republican-controlled Senate establishes removal trial procedures to her liking.  As a negotiating technique, this would appear to be sub-optimal. As in who cares if she never forwards the charges to the Senate? The only historical precedent that I can find for Pelosi’s stratagem is to be found in Mel Brook’s Blazing Saddles. When Cleavon Little (pictured above) is appointed the first black sheriff in a town full of...