Minutes later, with federal immigration agents banging on the front door of her apartment in Chicago’s Hermosa neighborhood, she had an answer. Maria’s husband was one of an as-yet-unknown number of people taken into custody Sunday morning in what appeared to be the opening salvo in the long-promised — and much-feared — federal immigration blitz on Chicago.

Immigration and Customs Enforcement, along with several other federal agencies, began what they called "enhanced targeted operations" on Sunday in Chicago.