Chicago community activist sounds off on migrant crisis: 'I welcome' Trump border czar / Chicago's migrant crisis in spotlight as Democrats prepare for convention / Chicago's response to migrant influx stirs longstanding frustrations among Black residents / Chicago's inhumane migrant evictions are a symptom of a bigger problem / Chicago residents speak out against migrants welcomed by city: 'Junking up our country' / Summit held to address Chicago's migrant crisis / For Chicago's new migrants, informal support groups help ease the pain and trauma / Proposed solutions to migrant influx in Chicago cause conflict among Dems