A Chicago mayoral committee is "poised to recommend that the city 'explore the feasibility' of putting a dome atop Soldier Field in an effort to make the facility more attractive to potential users," including the Bears. But the "dome 'almost certainly' will require some sort of taxpayer subsidy." No cost figures for the dome are listed in the draft report, but sources said that estimates of $400M to $1.5B "have been mentioned." Mayor Lori Lightfoot's Lakefront Museum Campus Working Group is "proposing a number of other upgrades and changes, including substantially rebuilding parts of the historic stadium and selling or granting potentially lucrative naming rights" (CRAIN's CHICAGO BUSINESS, 7/5).