Cook County leaders voted overwhelmingly on Monday to advance a proposal by Treasurer Maria Pappas to require taxing bodies across the county to submit detailed reports on how they use tax-increment financing.

Commissioners voted 15-2 to approve the ordinance (21-1048) during a meeting of the county board's Legislation and Intergovernmental Relations Committee on Monday, lining it up for a final vote by the full board on Thursday.

"I think when all is said and done, this information will be valuable to the taxpayers who want to understand how shadow governments are functioning," Pappas said. "This is the last frontier of transparency."

The ordinance allows municipalities to opt out of the reporting requirements, but local leaders who choose to hold back information "will have to face my wrath," Pappas told commissioners on Monday.

"I will call a press conference and say, 'This municipality doesn't want to provide this information,'" Pappas said. "And the title of the press conference will be, 'What are you hiding?'"

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