CHICAGO — Chicago police are preparing to arrest two undocumented migrants to face charges of home invasion and murder in connection with the brutal slaying of a man in his Norwood Park home, an alderman said this afternoon. Ald. Brian Hopkins (2nd), chair of the City Council’s Committee on Public Safety, shared the news on Twitter. “Two in custody for this horrific home invasion and murder,” Hopkins wrote, “both offenders are undocumented migrants, one from Ecuador, one from Venezuela