 But we agree more often than we disagree. Nikki Haley and Florida Governor Ron DeSantis among the speakers. Donald Trump has been demonized. He's been sued. He's been prosecuted. And he nearly lost his life. Security is on high alert in Milwaukee after Saturday's assassination attempt. Yesterday, police officers killed someone with knives a few blocks from the convention center. Sources tell CBS News he was homeless. Correspondent Matt Piper on what's ahead at the gathering.