CHICAGO (AP) — A federal appeals court blocked the immediate release of hundreds of immigrants detained during a Chicago area immigration crackdown in a split decision Thursday that also allowed the extension of a consent decree outlining how federal immigration agents can make warrantless arrests. The 7th U.S. Circuit Court of Appeals heard arguments last week about the 2022 agreement governing how U.S. Immigration and Customs Enforcement can arrest immigrants besides those being specifically targeted in an operation.