By ROBERT HAHN and PETER PASSELL

THE audience's mantra at the Republican National Convention — "drill, baby, drill" — reflected deep frustration with Washington's decision to lock down tens of billions of barrels of oil under American territory in an era of $4-a-gallon gasoline. Whatever the merits of his argument, Barack Obama's response that "drilling is a stop-gap measure, not a long-term solution" won't make the sting go away as long as it costs $100 to fill the tank of a pickup truck.