Important Changes at the Intersection of Antitrust and Administrative Law

Supreme Court changes in administrative law create uncertainty for new antitrust guidance from federal regulators.
March 21, 2022

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The Federal Trade Commission and the Antitrust Division of the U.S. Department of Justice will soon publish new joint guidelines applicable to mergers that raise horizontal issues in the same market and to mergers that raise vertical issues in the same supply chain.

These guidelines will reflect major changes in the perspectives of the two agencies with respect to the likelihood that a proposed merger or acquisition will lessen competition. They will also foreshadow decisions of the two agencies to challenge the legality of many proposed mergers and acquisitions that they would not have challenged in the past.

When the agencies apply the new guidelines in an effort to block proposed mergers and acquisitions, courts will have an opportunity to review the guidelines as they are applied in the context of particular cases. Courts have engaged in this review process for decades and have generally deferred to agencies. Courts have rarely questioned the validity of agency guidelines, and they usually defer to the agencies’ application of the guidelines to the facts of each case.

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