In this journal, James Langenfeld critically reviewed four of the present authors' articles that analyze the size of cartel overcharges and their antitrust policy implications. In this comment, we explain why we believe Langenfeld errs in his criticism of our work. In particular, this comment...

• The purpose of the following charts is to illustrate the size and economic impacts of the modern international cartel movement and the enforcement responses of the world’s antitrust authorities and national courts. These illustrations may serve heuristic purposes or show empirical...

Around 2012, authorities discovered one of the most complex set of cartels in the world in its construction industry. Dozens of companies large and small colluded on the price of bids for public works in several cities in the Province of Quebec over a decade or more. Bidding firms, some with...