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ARTICLE · 20 JANUARY 2025

Speedbump Or Roadblock?: Complaint Challenges New Hart-Scott-Rodino Rules

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The pending overhaul of the Hart-Scott-Rodino (HSR) rules faces a new challenge. Published in the Federal Register in November, the final HSR modifications were set to become effective on February 10...

United StatesAntitrust/Competition Law
Shawn R. Johnson
Shawn R. Johnson
Ashley McMahon
Ashley McMahon
Connor Ahearn
Connor Ahearn

The pending overhaul of the Hart-Scott-Rodino (HSR) rules faces a new challenge. Published in the Federal Register in November, the final HSR modifications were set to become effective on February 10, but late last week the U.S. Chamber of Commerce, a local Chamber chapter, the Business Roundtable, and the American Investment Counsel filed a complaint seeking to block their implementation. While the complaint does not seek a temporary restraining order or a preliminary injunction, the case further highlights the expanded regulations and additional burden the agencies are seeking to impose on merging parties, and places a spotlight on the issue as the Trump Administration prepares to take control of the antitrust agencies.

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