A U.S. lawmaker is urging the CEOs of the country's largest airlines to lower prices if and when the cost of jet fuel declines after a massive run-up this year prompted carriers to raise surcharges, bag fees and fares. "If airline pricing is truly tied to global fuel costs, then it must be truly responsive when those costs decline," U.S. Rep Ritchie Torres, D-N.Y., wrote to the CEOs of Delta Air Lines , United Airlines , JetBlue Airways and Southwest Airlines , according to a letter that was