The Durbin Amendment to the Dodd-Frank financial reform legislation capped debit card interchange fees for banks with assets of $10 billion. Credit card and prepaid card interchange fees were not regulated. The cap, which took effect on October 11, 2011, cut the average interchange fee for...

This paper offers an opportunity to reflect on Frank Easterbrook’s seminal work on the Limits of Antitrust and to discuss its particular relevance to the problem of antitrust enforcement in the face of innovation. The error-cost framework in antitrust originates with Easterbrook’s analysis,...