Mistaken reports from CPS about immigration agents at a Back of the Yards school Friday have raised fear in the community and questions about why they took so long to clear up. Why it matters: The incident happened at a time when schools were on high alert from President Trump's new rules allowing Immigration and Customs Enforcement (ICE) agents to enter schools and churches.

Chicago Public Schools prevented federal officers from from going into an elementary school on Chicago’s Southwest Side Friday and talking to students, according to school officials.