Ald. Sophia King (4) and Michele Smith (43) got into a heated exchange during a February zoning committee meeting over King’s proposal to tighten regulations on “house museums.”

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Ald. Sophia King (4) withdrew her proposal on Tuesday to tighten restrictions around residential museums and cultural sites, blasting Mayor Lori Lightfoot and other high-profile critics whom she said conspired to sink the citywide measure.

The latest draft of King’s ordinance (O2020-6185) would ban “cultural exhibit” uses in residential single-family zoning districts, and it would require new “house museum” applicants in other residential zones to get a special permit from the city’s Zoning Board of Appeals.