A Chicago-sponsored ID program for the city’s undocumented, and possibly underage homeless as well as formerly incarcerated residents is one step closer to reality with an official ordinance introduced at Wednesday’s full City Council meeting. Two downtown aldermen ditched their preliminary noise ban on downtown street performers with a new measure “aimed at striking a fair compromise.” And after winning her runoff election, Ald. Sophia King (4) was officially sworn in to finish out the remainder of Will Burns’ term.