Mattax previously served as deputy attorney general for defense litigation, past director of defense litigation, and past chief of the financial litigation division for the Texas Attorney General's Office. He is a member of the State Bar of Texas and is admitted to practice before the Texas Federal District courts, Fourth and Fifth Circuit U.S. courts of Appeal and U.S. Supreme Court. He is past co-chair of the Amos Commission, and a past board of trustees member of University United Methodist Church. Mattax received two bachelor's degrees and a law degree from The University of Texas at Austin.
Other Offices Held
Commissioner of Insurance (Insurance, Texas Department of)