Mario Castillon graduated cum laude from the University of Texas at Austin in 2015 with a B.A. in Government, with special honors in Latin American Studies.
He received his law degree from the University of Texas School of Law in May 2018. He was involved in the law school’s immigration clinic and the Texas Hispanic Journal of Law and Policy. Mario has worked criminal and civil cases at a personal defense office and international law cases at the Inter-American Commission on Human Rights in Washington, D.C.
Mario is a member of the Hidalgo County Young Lawyers Association and of the Hidalgo County Bar Association.