WASHINGTON, Jan 18 (Reuters) – U.S. antitrust enforcers announced plans on Tuesday to rewrite merger guidelines in order to better fight illegal deals.

The U.S. Justice Department and Federal Trade Commission issued a joint statement saying U.S. industries had become increasingly concentrated and a surge in merger filings in 2020 and 2021 signaled the situation will worsen.

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Sarah Miller, founder of the American Economic Liberties Project, called the plan to rejig the guidelines a victory.

“The agencies’ commitment to issuing new guidelines based on market realities, including in digital and labor markets, should be applauded by anyone concerned about the power of Big Tech or the plight of working families,” she said.