Dr. Clark is a PhD economist and a full-time university faculty member. He teaches economics and statistics at the undergraduate and graduate level. Dr. Clark's expertise and skill set are so impressive that he has been retained by Fortune 500 companies, the Trump Corporation and Donald J. Trump in litigation matters. Dr. Clark's expert economic testimony has included: defamation, lost earnings, casino gambling, auctions, real estate, tourism, matrimony, divorce, estate matters, discrimination, sexual harassment, personal injury and wrongful death. He is a member of the National Association of Forensic Economics, National Association of Business Economics, and the American Economic Association.