CHICAGO — Valerie Jarrett has gone from friend, confidante and special senior advisor to Barack Obama during his two terms in office to CEO of the Obama Foundation. And with less than a month to go, she’s about to witness the birth of the Obama Presidential Center. The 19.3-acre campus in Chicago’s Jackson Park neighborhood is set to open to the public June 19. “It exceeds my wildest expectations. I think we’ve really done a great job. We worked with the community to help us on the design and the jobs and the feel,” she said. “I think people will...