From left: Ald. Nicholas Sposato (38), then-Deputy Inspector General for Public Safety Deborah Witzburg and Ald. Byron Sigcho-Lopez (25) during a City Council joint Finance and Public Safety committee meeting last year

Mayor Lori Lightfoot put an official stamp Thursday on her nomination of Deborah Witzburg, a former deputy in Chicago’s Office of the Inspector General, as her choice to lead the office on a permanent basis. The long-awaited pick brought comfort to good government advocates and some aldermen who feared the mayor would pick an outsider over Witzburg, an acolyte of former Inspector General Joseph Ferguson, with whom the mayor has repeatedly clashed.