AUSTIN — Deirdre Delisi once aspired to be a diplomat, and Gov. Rick Perry may have finally granted her wish. As head of the Texas Transportation Commission, Perry's former chief of staff will test her diplomatic skills in an emotion-filled arena in which a state senator has already called her a "political hack." In an early sign of her peacemaking potential, the 35-year-old Delisi scheduled one of her first meetings as chair with that senator, Transportation and Homeland Security Committee Chairman John Carona, R-Dallas. "I was left with the impression that she genuinely wants a new and fresh start for...