From left: Mayor Lori Lightfoot, Chicago Department of Housing Comm. Marisa Novara and Bickerdike Development CEO Joy Aruguete speak at the grand opening of the Lucy Gonzalez Parsons apartments in Logan Square in May. [Twitter/Chicago Department of Housing]

An ordinance representing the culmination of Mayor Lori Lightfoot’s legislative efforts to disrupt Chicago’s racial segregation and blunt aldermen’s powers to block affordable proposals in their own wards is finally set for a vote on Tuesday. But negotiations between the mayor’s administration and powerful aldermen have defanged the plan of some of its sharpest provisions.