The 2023 U.S. Merger Guidelines: A Review

Table of contents

I. A Retrospective and Prospective Analysis

of Monopsony Power Under the Merger Guidelines

Logan Billman and Kristen Limarzi

II. Mergers That Increase Buyer Power and the Function

of Presumptions: Two Key Issues in the Revision

of the Merger Guidelines

Peter C. Carstensen

III. What’s new in the 2023 Merger Guidelines

Joseph Farrell

IV. Common Ownership and the Merger Guidelines

Merritt B. Fox and Menesh S. Patel

V. Awakening Merger Control: The New U.S. Merger

Guidelines

Eleanor M. Fox

VI. Antitrust Ideology and the 2023 U.S. Merger Guidelines

Diana L. Moss

VII. The Missing Merger Guideline: On Efficiencies

Maureen K. Ohlhausen and Taylor M. Owings

VIII. Economics in the 2023 Merger Guidelines:

Three Areas of Concern

Jeremy Sandford, Loren Smith and Nathan Wilson

IX. The Evolution (and Devolution) of Market Structure

Reasoning

Sean P. Sullivan

X. Market Delineation under the New Merger Guidelines:

Gerrymandering Redux

Gregory J. Werden