The incident appears to be one of the first during Trump’s second administration in which immigration officers entered school grounds. Immigration officers arrested a teacher early Wednesday in Chicago after chasing her into the grounds of a private preschool and grabbing her as parents and students looked on, according to a local official, witnesses and video footage of the incident. Several parents said they were waiting to drop off their children around 7 a.m. at Rayito de Sol, a Spanish immersion day care and school, when they saw armed officers in black vests with the words “POLICE ICE” run behind...