Complex sentence: Lewis was elected to the House from Tarrant County in 1970 and named chairman of the House Committee on Natural Resources in 1973, moving over to chair the House Committee on Intergovernmental Affairs in 1977.
Split into simpler sentences: Lewis was elected to the House from Tarrant County in 1970 and named chairman of the House Committee on Natural Resources in 1973. He chaired the House Committee on Intergovernmental Affairs in 1977.