Our picks for events in and around Chicago this weekend. EXPO Chicago Get a glimpse of work by artists featured in the Obama Presidential Center, due to open later this year, and much more as this showcase of contemporary art takes over Navy Pier’s Festival Hall. Highlights of Expo Chicago, now in its 13th year, include a section on emerging galleries as well as a continuing collaboration with the Galleries Association of Korea. Watch for related events across the city, including the Intuit Art Museum After Party (5 p.m. April 10, more at art.org). It’s a great weekend to immerse...