Professor Bush鈥檚 scholarship focuses on the intersection of regulation and antitrust, with emphasis on deregulated markets, immunities and exemptions, and merger review. Along with Harry First and the late John J. Flynn, he is coauthor on the antitrust casebook 鈥淔ree Enterprise and Economic Organization: Antitrust鈥 (7th Ed.) with Foundation Press.
Professor Bush received his Ph.D. in economics and J.D., both from the University of Utah. While completing his J.D., he consulted on issues regarding state deregulation of electric utilities, interned at the U.S. Department of Justice’s Antitrust Division, taught various economics courses, and received a Marriner S. Eccles Fellowship in Political Economy.
After receiving his J.D., he served as an Attorney General’s Honor Program Trial Attorney at the Antitrust Division’s Transportation, Energy, & Agriculture Section, where his primary focus was the investigation of mergers and anticompetitive conduct in wholesale and retail energy markets and airlines. He has testified numerous times on antitrust matters before congressional committees and federal commissions.
Darren Bush

By this expert
Postscript: A Further Look at ProMarket鈥檚 Economics

ProMarket鈥檚 new 鈥淎ddendum to Retraction,鈥 written it appears in response to our recent INET post, doubles down on its critique of our piece which showed that it is feasible for increased output to lead to reduced welfare. The ProMarket addendum is notable for its economic errors.*
The Mythology of Horizontal Merger Efficiencies

Economists had to distort economic theory to fashion their merger 鈥渆fficiency鈥 arguments
The Horizontal Merger Efficiency Fallacy
By permitting business definitions of 鈥渆fficiency鈥 to leak over into the antitrust lexicon, antitrust scholars have done a great disservice
Now You See It, Now You Don鈥檛: Antitrust Arguments 鈥淐hicago Style鈥

ProMarket and the Consumer Welfare Standard An output increase is not sufficient to increase welfare. Allocation—how goods are distributed—matters.