Jéssica Dutra and Pablo Varas were contributors to the recently published “2023 Annual Review of Antitrust Law Developments” from ABA Antitrust Law Section. For over 40 years, the publication and its annual supplements have been recognized as the most authoritative and comprehensive research tools for antitrust practitioners. The 2023 Edition summarizes developments during 2023 in the courts, at the agencies, and in Congress.