Believing that the merger provisions of the Clayton Act have been applied too narrowly, the Antitrust Division and the FTC have brought a number of high-profile merger challenges recently seeking to broaden the application of that Act in important ways. This course will address the premise of these challenges — have the merger provisions been applied too narrowly? — and will examine a number of those challenges involving such issues as potential competition, vertical foreclosure, and monopsony power to ask whether the agencies are succeeding in these efforts.