CHICAGO — Homeland Security Secretary Kristi Noem on Thursday flatly rejected a request by Illinois Gov. JB Pritzker to suspend immigration enforcements in the Chicago area until after Halloween. Pritzker cited children’s safety and an incident from Saturday in which Customs and Border Protection agents deployed tear gas in a neighborhood where kids were preparing for a Halloween parade. In turning down the request, Noem also cited children’s safety. “We’re absolutely not willing to put on