Cook County leaders shared details of the financial impact of the federal immigration enforcement.
Over the past year, there has been a sharp decline in spending by Latin American-born residents at local businesses.
The Great Cities Institute at the University of Illinois Chicago found the heightened enforcement cost Cook County $1.26 billion in retail and restaurant activity.
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According to the Department of Homeland Security, more than 45,000 undocumented immigrants were detained as a result of the operation.
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