First elected in 1981, he currently ranks fifth in overall seniority of the 150 members of the Texas House of Representatives.
He is a three-time past chairman of the House Ways and Means Committee, a former chairman of the House Economic Development Committee, a former chairman of House Committee on Land and Resource Management, and has served as a past vice-chairman of the House Public Education Committee. A senior partner in the Brownsville-McAllen law firm of Roerig, Oliveira, and Fisher, he is the father of two adult children. A Brownsville, Texas native, he is a graduate of Brownsville High School, the University of Texas and the University of Texas School of Law.
The dean of the Rio Grande Valley legislative delegation, Rep. Oliveira has long been an advocate for increasing funding for public schools, job creation, improving water and wastewater projects for Texas colonias, increasing minority university attendance, and ensuring clean beaches and park space for future generations. Most recently, his legislation created the new University of Texas-Rio Grande Valley and its Medical School, and allowed SpaceX to space launch rockets near Boca Chica Beach. His legislation which allowed for the garnishment of wages for child support collection has brought more than $30 billion for Texas children.