The bulk of the research featured in our interactive database on these key topics in competition enforcement in the United States finds evidence of significant problems of underenforcement of antitrust law. The research that addresses economic theory qualifies or rejects assumptions long made by U.S. courts that have limited the scope of antitrust law. And the empirical work finds evidence of the exercise of undue market power in many dimensions, among them price, quality, innovation, and mar...
