The Goofy Charm of DJ Khaled's "The Keys"

As I read "The Keys," a new book collecting the motivational wisdom of DJ Khaled, I kept returning to the same question: Could this man someday become President? The forty-one-year-old has demonstrated an uncommon gift for connecting with people--first as a d.j. in Miami, where he helped establish the city's place in hip-hop's mainstream, and now as a kind of human meme, a Snapchat superstar who has used the video-sharing platform to document his love for watering plants, the time he got lost on...