David D. Weinzweig sits on the Arizona Court of Appeals. Before joining the court, Judge Weinzweig spent decades at the highest levels of government and private practice, specializing in constitutional law and antitrust law. He co-authored legal treatises on antitrust law, consumer protection and benchmarking. Since joining the court, Judge Weinzweig has authored thousands of orders, opinions and memorandum decisions. He teaches the art and science of persuasive writing to judges, lawyers, law clerks and law students across the nation.