Individual Federal Trade Commission (FTC) cases invariably raise broad questions about consumers, markets, and effective enforcement policy. Recent consumer protection cases raise questions about information regulation. Horizontal merger enforcement has recently focused on retrospective analysis...

In this essay, we describe antitrust analysis of horizontal mergers in U.S. retail markets. We begin by providing a brief overview of the economic and legal framework governing horizontal merger policy, and highlight key issues in analyzing retail mergers. Next, we discuss the changing legal...