Witnesses say a Chicago day care employee was detained at work during a drop-off time for children, reflecting the Trump administration’s increasingly aggressive enforcement tactics. Alderman Matt Martin says the employee ran from a vehicle inside the Rayito de Sol Spanish Immersion Early Learning Center on Wednesday morning after being trailed by officers to work. It was unusual even under “Operation Midway Blitz,” which has prompted more than 3,000 Chicago area immigration arrests since early September. Homeland Security Assistant Secretary Tricia McLaughlin posted online that ICE agents didn't target a day care but had tried to stop a vehicle when the driver refused to pull over.