Push for higher gas tax could follow chief's death The death of Ric Williamson, the fiery, whip-smart chairman of the state transportation commission, could upend the still-roiling debate over toll roads in Texas in the new year. Mr. Williamson died Saturday of a heart attack at age 55, sending shock waves through the nearly 15,000-employee department he led as well as the political and policy circles where his combative style and pro-toll-road agenda had engendered enormous change – and criticism. Always careful to credit Gov. Rick Perry, a close friend and former roommate, Mr. Williamson emerged as a lightning rod...