 Two days after Mr. Trump was shot, party leaders are calling for unity. But a GOP leader got a frosty reception today from delegates. Mitch McConnell, top Republican in the Senate, took the stage. He was announced as an honorary co-chair of this convention. And he was booed by attendees, we heard. The boos were audible. We've also heard attendees say that they believe that the events of the weekend are going to transform this convention. It remains to be seen how they do.