 From ABC News, I'm Chuck Sievertson. Please welcome Donald J. Trump. He is now the official nominee who's been sitting at tonight's first nighttime session of the Republican Convention in Milwaukee, sitting next to his choice for running mate, first-term Ohio Senator J.D. Vance. Mr. Trump has been subdued, sometimes smiling, but with his right ear bandaged after it was nicked by a bullet two days ago at a rally