Mayor, City of Amarillo

Commissioner, City of Amarillo

Senator, Texas State Senate, District 31, 2004-2023

Candidate, Texas State Senate, District 31, 2018

President Pro Tempore, Texas State Senate, 2017

Former Chair, Agriculture, Rural Affairs & Homeland Security Committee, Texas State Senate

Former Member, Business and Commerce Committee, Texas State Senate

Former Member, Committee of the Whole, Texas State Senate

Former Member, Education Committee, Texas State Senate

Former Member, Finance Committee, Texas State Senate

Former Member, Government Facilities Select Committee, Texas State Senate

Former Chair, Higher Education Committee, Texas State Senate

Former Member, International Relations and Trade Committee, Texas State Senate

Former Member, Joint Committee of Oversight of Higher Education Governance, Excellence and Transparency, Texas State Senate

Former Vice Chair, Natural Resources Committee, Texas State Senate

Former Member, Natural Resources and Economic Development Committee, Texas State Senate

Former Member, Open Government Committee, Texas Senate

Former Member, Oversight of Criminal Justice Committee, Texas State Senate

Former Chair, Select Committee on Redistricting, Texas State Senate

Former Member, Subcommittee on Higher Education Funding, Texas State Senate

Former Member, Subcommittee on Public Education Funding, Texas State Senate

Former Member, Subcommittee on Public Safety, Texas State Senate

Owner, Steel Service Centers, Incorporated, present

Member, National Rifle Association (NRA), present

Member, Owners Group, Harley-Davidson, present

Member, Texas Farm Bureau, present

Member, Advisory Board, Crime Victims Institute

Member, Amarillo City Commission

Co-Chair, American Legislative Exchange Council

Member, Civil Service Commission

Member, Energy and Environment Committee, Southern Conference of State Legislatures