He has tried more than 200 valuation cases before administrative tribunals and before state and federal courts in Arizona and 31 other states, including more than 30 jury trials. He has also argued more than 100 appeals before state and federal appellate courts, and he is admitted to practice before: The United States Supreme Court, The United States Tax Court, The United States Court of Appeals (Eighth, Ninth and Tenth Circuits), The United States District Courts in Arizona, California (3), Missouri, Oregon and Utah, and The Supreme Court of Arizona.