Officials call the 37,000 migrants who have arrived in Chicago since August 2022 an “unprecedented” situation. But a WBEZ analysis showed that earlier waves from Europe, the South and Mexico rivaled the current situation in size and scope. Reset explores the connections between current migration to Chicago and what happened in the past with WBEZ data reporter Amy Qin and UIC history professor Lilia Fernández. For a full archive of Reset interviews, head over to wbez.org/reset.