Senate King is member of the Senate Education Committee, the Senate State Agencies and Governmental Affairs Committee, the Joint Energy Committee, the Senate Interim Committee on Children and Youth and the Joint Budget Committee.

In the past, Senator King worked with legislators nationwide as a member the Southern Legislative Conference (SLC), the Council of State Governments (CSG), the National Conference of State Legislatures (NCSL) and the American Legislative Exchange Council (ALEC).

During the 94th General Assembly, Senator King sponsored legislation to clarify concealed carry laws. Starting in the fall of 2023 the ALC - Game and Fish / State Police Subcommittee began hearings to clarify Arkansas gun laws and Senator King was vice-chair of the subcommittee.

King served on the Economic Development, Transportation and Cultural Affairs Committee of SLC, the Intergovernmental Affairs Committee of CSG, the Justice Performance Project of ALEC and the Budgets and Review Standing Committee and Redistricting & Elections Task Force of NCSL. In August 2013, Senator King served on the panel, Safeguarding Elections- Before, During and After Election Day, during the 2013 NCSL Legislative Summit in Atlanta where he discussed and provided ideas on improving elections, creating better registration procedures and maintaining efforts to enfranchise eligible voters.

In 2006, Senator King was elected to the Arkansas House of Representatives where he served three consecutive terms. A former election commissioner, King is a farmer and owner of Triple K Farms in Green Forest. He is a Christian and was born in Springdale. Senator King and his wife, Shana, live in Carrol County.