Among the more than 100 jurisdictions with active competition policy regimes today, the United States has the distinction of starting first, creating the most extensive set of judicial precedents, and possessing the largest and most experienced enforcement institutions. Antitrust institutions in the United States have long stood at the summit on any scale of international prestige and influence in the competition policy field. Yet any such ranking would also undoubtedly indicate that during the last decade or so, the antitrust institutions of the European Union have grown in size and sophistication to the point where they are comparably respected and as influential as their U.S. counterparts. In recent years, as competition policy has spread throughout the world, nations newly adopting antitrust enforcement have been more likely to emulate Europe than the United States.
Baker, Jonathan , "My Summer Vacation at the European Commission" (2005). Articles in Law Reviews & Other Academic Journals. 1931.