State attorneys general owe some of their current power to Cozen O’Connor partner Bernard Nash—who drafted the historic Hart-Scott-Rodino Antitrust Act of 1976, giving these officials standing to bring antitrust cases in federal court. And when Nash moved to private practice, he also transformed how lawyers represent clients who engage with state AGs, first at his own firm, later at Dickstein Shapiro, and since 2015 at Cozen O’Connor.

Along the way, his clients included AT&T, HBO, Mastercard, Pfizer, Time, the U.S. Chamber of Commerce and Walmart.