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              Congressional
           R esearch Service                                            1






Antitrust Agencies Release Draft Merger

Guidelines and Propose HSR Rule Changes



August 24, 2023

On July 19, 2023, the Department of Justice (DOJ) and the Federal Trade Commission (FTC) (the
Agencies) jointly released draft Merger Guidelines (Draft Guidelines) for public comment. If adopted, the
Draft Guidelines will update the factors and frameworks the Agencies intend to consider when
investigating mergers and deciding whether to challenge particular mergers as antitrust violations. The
Agencies signaled their intent to modernize the Merger Guidelines in January 2022, when they issued a
joint request for public comments to inform potential revisions. According to the Agencies, the new
revisions reflect significant advancements in the law and fundamental changes in our economy.
The Draft Guidelines arrive on the heels of a proposed rulemaking the FTC published on June 29, 2023,
that would ... redesign ... the premerger notification process required by the Hart-Scott-Rodino
Antitrust Improvements Act (HSR Act). Together, the new rules and Guidelines would subject merging
firms to additional disclosure requirements while also providing new guidance about the types of mergers
the Agencies are likely to investigate and challenge.
This Legal Sidebar provides an overview of the legal and regulatory landscape that applies to merger
enforcement, the recent proposed changes to the Merger Guidelines and HSR Act regulations, and some
considerations for Congress.


The Legal and Regulatory Landscape

Section 7 of the Clayton Antitrust Act prohibits mergers or acquisitions that may ... substantially ...
lessen competition, or ... tend to create a monopoly. The DOJ and FTC have largely overlapping
jurisdiction to enforce this prohibition and are the agencies primarily responsible for merger enforcement,
although a handful of other agencies also play a role in certain highly regulated industries (such as the
Surface Transportation Board's review of railroad mergers and the Federal Communications
Commission's review of telecom mergers).
Congress intended the Clayton Act's prohibition of anticompetitive mergers to arrest the creation of
trusts, conspiracies, and monopolies in their incipiency, and before consummation. To facilitate review
of mergers that have not yet been consummated, the HSR Act imposes premerger notification
requirements on parties who are planning transactions that exceed prescribed thresholds. The required
                                                               Congressional Research Service
                                                                 https://crsreports.congress.gov
                                                                                   LSB11027

 CRS Legal Sidebar
 Prepared for Members and


Committees of Congress

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