The businessman Paolo Zampolli, a friend of Donald J. Trump, is helping reshape the John F. Kennedy Center for the Performing Arts in Washington. Zampolli wants to make the center a destination by hosting fashion shows, opening a marina, and sending art to space. He believes these changes will bring in more money and people. Zampolli's ideas have drawn skepticism, but he insists that he is not changing the direction of the art and that the Kennedy Center should not be political.