Is This Donald Trump's Moment?

David Gergen: It took several days for this story to break through on a national level. When it did, it broke through on the conservative side with Fox News kind of playing it up and focusing on it. This is one of his truly like first major campaign events in a lot of ways," he says. "I credit the former president with recognizing a gimme" But I don't think this is the kind of aha moment in a Trump campaign that was in 2016 when so many people just needed one sign,Gergen says.