Representative, United States House of Representatives, Texas, District 6, 2019-2021

Candidate, United States House of Representatives, Texas, District 6, 2018, 2020

Member, Arlington City Council, District At-Large, 2000-2008

Mayor Pro Tempore, Arlington City Council, 2004-2008

Former Member, Education & Labor Committee, United States House of Representatives

Former Member, Foreign Affairs Committee, United States House of Representatives

Former Member, Subcommittee on Africa, Global Health, Global Human Rights, and International Organizations Committee, United States House of Representatives

Former Member, Subcommittee on Europe, Eurasia, Energy, and the Environment Committee, United States House of Representatives

Former Member, Subcommittee on Health, Employment, Labor, and Pensions Committee, United States House of Representatives

Former Member, Subcommittee on Workforce Protections, United States House of Representatives

Former Employee, PVI Industries

Former Tax Assessor-Collector, Tarrant County

Chief of Staff, United States Congressman Joe Barton, 2009-2011

District Director, United States Congressman Joe Barton, 2000-2009

Columnist, Fort Worth Star-Telegram, 1995-2000

Member/President, Arlington Historical Society Board

Member/President, Arlington Housing Authority Board of Commissioners

President, Arlington Night Shelter

Member, Arlington Sports Authority

Founding President, Arlington Tomorrow Foundation

Member/President, Executive Committee, Arlington Human Service Planners

Member/President, Mansfield Education Foundation Board

Chair, Tarrant County Historical Commission

Delegate, Republican National Convention, 2004