 Republicans from across the country are gathering in Milwaukee this week to officially nominate Donald Trump for the presidency. Security has been dramatically heightened following the assassination attempt on Trump during a rally Saturday in Pennsylvania. We turn now to ABC News political analyst Steve Roberts. He's on the Northwest News line this morning. Steve, how does this change things moving forward in this campaign? Well, I think it can have an effect, and here's why. Donald Trump's whole political strategy, his whole political idea has been defiance.